Which SD memory card is better? How to choose the right memory card class for a smartphone or phone? Decide which card is right for you

Today's article is a short educational program on SD memory cards. These flash cards are widely used in modern technology: in mobile phones, GPS navigators, cameras and video cameras.

SD is by far the most popular memory card standard today. The vast majority of devices that work with memory cards support this standard.

SD memory cards come in three different sizes. This made it possible to cover different devices: from miniature audio players to professional video cameras.

So, what are there? SD memory card form factors :

microSD– these cards are intended for use in mobile phones, smartphones, tablets and other compact devices.

– these cards are slightly larger than microSD. Until recently, they were used in mp3 players and other portable equipment. But today they have lost their popularity and are used less and less.

SD– cards of the largest size. They are used in cameras, video cameras, video recorders and other relatively large portable equipment. New generation cards SDHC And SDXC are exactly the same size as SD.

By the way, you can insert a card of a smaller form factor into a device designed to work with large SD cards. To do this you need to use a special adapter:But it’s better not to do this unless absolutely necessary, because... Usually microSD cards are much slower than full-fledged SD cards.

Exists four generations of SD memory cards :

  • SD 1.0– holds information volume from 8 MB to 2 GB
  • SD 1.1– up to 4 GB
  • SDHC– up to 32 GB
  • SDXC– up to 2 TB

In the case of SD cards, there is backward compatibility: i.e. devices capable of working with SDXC understand the SDHC format and the older SD format (but not vice versa!).

Memory cards differ not only in size or capacity. One of the main parameters is speed exchange information with the device.

SD memory card speed manufacturers designate either as class, or in the form multiplier:

  • SD Class 2– recording speed not less than 2 MB/ With 13x;
  • SD Class 4– recording speed not less than 4 MB/s, which corresponds to the multiplier 26x;
  • SD Class 6– recording speed not less than 6 MB/s, which corresponds to the multiplier 40x;
  • SD Class 10– recording speed not less than 10 MB/s, which corresponds to the multiplier 66x;
  • SD Class 16– recording speed not less than 16 MB/s, which corresponds to the multiplier 106x.

As you can see, the speed class of a card directly indicates its speed in MB/s. To find out what class your memory card has, just look at its front part: it should be indicated there. For example, in this case the card tenth speed class:

Before purchasing an SD memory card, you need to find out what speed class your device requires. This information must be indicated in the instructions for it.

The speed class is important for those who are going to shoot video. For example, recording Full HD video requires a write speed of 3 MB/sec, which corresponds to a Class 4 memory card. Using a slower card will cause problems when shooting. However, in some cases, the video bitrate can reach 6 MB/s. Therefore, for video shooting it is better to buy memory cards starting from Class 6 and higher.

How transfer information directly from the SD card to the computer? For this purpose there are special devices called card readers. The card reader can be either external (connected via a USB connector) or built into a computer or laptop.

After connecting the card reader to the computer, insert your memory card into the corresponding slot. After that, go to Windows “Computer” - the flash drive will appear in the “Devices with removable storage” section. You can open it and perform operations with files.


built-in internal card reader

In conclusion, I want to say that when buying an SD card, it is better not to go for cheapness, but to buy a card from a well-known manufacturer (I would recommend Transcend). Because It will be very disappointing to lose captured photos or videos due to a faulty card.

If you have gadgets, then you are probably faced with the fact that you need to choose a memory card for a tablet, camera, video recorder, or smartphone. Most likely, the device already has some kind of memory built in, but if you want to upload and use photos and videos, it will not be enough. If you look at the cards, you might think that they are not that different, but this is a completely wrong idea. Now we will tell you how to choose an inexpensive, but good memory card that suits your device. Then all your data will be securely stored. And for those who are short on time, video instructions from experts are attached.

The devices presented in various stores are divided into several types. Usually, its characteristics are written on the card and indicate where it can be used. So for example, if you have a camera, then most likely you will need SD.

Photos of memory cards

But this type is divided into subtypes according to capacity: large and extra-large. And if your camera is 10 years old, then you won’t be able to use a large capacity. And if it’s even larger, then the extra-large one won’t do.

The camera, intended for professionals, is equipped with a memory card of a type called CF. This abbreviation stands for “CompactFlash” and means that this card can also be used as a flash drive. It has a large volume and high-speed recording. But not every camera can handle high-speed transmission. You should consider this before choosing good map memory.

It is best to have direct access to memory. Compact smartphones and tablets use microSD. The same card can be applied to some cameras and video recorders.

But despite the name, this map memory for gadgets is as functional as the rest. Some manufacturers come up with their own flash drives. Then the device should have a combo slot or two.

Each memory card has its own capacity. It means that a certain amount of information will fit on it. The larger the volume, the more information, and the higher the price. So how much memory do you need? A lot depends on your device. For example, 2-4 GB is enough for phones, some support 8, but you need to find out whether the device will “glitch”. But for a video recorder or camera you will need at least 16.

In addition, the volume is directly affected by the resolution of the image. The larger it is, the greater the volume required. The best is 128, but remember to check that the mechanism can support such a large volume and does not “glitch” during use. This is important because many beginners then encounter this problem and think that the problem is in the gadget, but it turns out that the memory card was selected incorrectly.

The more different small details there are in the picture, the better quality it is, and the more space it needs. The same can be said about video. Let's give an example. Let's say you have a video clip in RAW format. One frame of it will take 30 MB. Imagine you're photographing a wonderful winter landscape or a beach holiday, and suddenly you find that you're running out of space on your memory card. Therefore, if you are thinking about how to choose a memory card, then purchase 32 GB.

Below in the photo you can see a sign that tells you how many videos and pictures can be recorded on a specific card.

Memory table

A person buys a memory card for himself and often doesn’t even know that it has speed. Nevertheless, it is very important. If you are recording Full HD video, then the low speed will mean that the recording will be interrupted every now and then. If you shoot a series of frames, the camera will freeze. This is very inconvenient. Therefore, you need to know which card is slow and which is fast.

The most common cards are SD. The speed is always indicated on them.

CD card speed parameters

Which class of memory card is better? The table above shows that the smaller the class, the lower the speed. Let's say the second class is selected. This means the speed will be 2 MB. In this case, the actual speed is indicated.

How to choose the right class? For example, you are shooting Full HD video. The minimum grade required is sixth, but 10 is better. If the memory card is fast, then you can shoot at least every day and take a series of pictures. As long as a slow card records photos, you'll miss out on great shots.

Let's say you take pictures of people, animals or machines that move quickly. Then you need more speed - from 30 to 45 MB/s. The first is minimal, the intervals between a series of pictures will be small when the pictures taken are recorded on the card. If you are a professional photographer, how to choose a memory card? Of course, high-speed - at least 100 Mbps.

But reading speed is not so important. It is similar to or higher than the write speed. Therefore, when you buy a memory card that has a high write speed, then know that the write speed will also be high.

Important to know

While the card is in the gadget, it is protected. But if you pull her out, then anything can happen to her. For example, she will fall. Or exposed to sunlight. It may be very cold, and this also has an adverse effect on the memory card. There is nothing worse than soaking it in water. It is strictly forbidden to expose it to x-rays. Therefore, at airports you need to insert the card into the device.

It is important to know that cards are also sold that have protection against this impact. So check with the seller.

Best cards

Now you know the characteristics and can choose not expensive, but good option for your gadget. The devices are different, and the parameters needed are also different, and each is important. Therefore, first decide on the type of device. There is a top memory cards where the best memory cards are presented.

Don't forget to talk to customers to get opinions about the models and their features. It is better to choose a device that has already been tested in operation. It is important to remember about the price-quality ratio.

SD and SDHC:

  • The first is Sandisk, and the Extreme SDHC UHS Class 3 60MB/s model.
  • The second is Kingston and the SDA10 model.
  • And the third is Transcend, model TS*SDU1.

Micro - SD,SDHC and SDXC:

  • Our first one is Sandisk, and there are two models: Ultra microSDHC Class 10 UHS-I 48MB/s and Extreme microSDXC Class 10 UHS Class 3 60MB/s.
  • The second is Transcend, and model TS*USDHC10U1.

CompactFlash:

  • There are Silicon and the Power 400X Professional Compact Flash Card model.

Conclusion

Now you know a lot, and you won’t buy a bad thing. Check your finances and the required volume and feel free to go to the store.

Modern phones and tablets support only one memory card standard - microSD, as well as its varieties - microSDHC and microSDXC. Therefore, you need to look for products with exactly these connectors. But which one exactly? choose a microsd memory card for your smartphone and what else should you pay attention to?

Some buyers are mistaken that every smartphone allows the use of memory cards. However, in reality the situation is different. The growing amount of memory in flagship models and the use of cloud technologies have led many companies to abandon the microSD card reader in their smartphones. This nuance can be encountered, for example, in all variations of the Samsung Galaxy S6 and in the Samsung Galaxy Note 5.

On the one side, Android system does not allow you to move applications to a memory card, but on the other hand, you can store photos, videos and music on them. So the decision to ditch the reader is not an idea that power users favor.

So before you decide, which memory card to choose for a smartphone You should make sure that the device has a microSD slot. This information can be easily found in the characteristics of the smartphone.

What capacity?

The second question is worth thinking about before select a smartphone memory card, this is what capacity it should have. This is where the problem comes in again because not every smartphone supports more capacity. The problem is the file system used in microSD models. The first conventional memory cards used the now outdated FAT16 system, which allowed a maximum of 2 GB of capacity. Later models use the microSDHC FAT32 system, thanks to which you can have up to 32 GB of storage space. Those who want a larger memory card should be generous with sdxc cards with the exFAT file system with a theoretical capacity of up to 2 TB.

The problem is that not all smartphones support the microSDXC standard, and if they do, they usually have capacity limitations. So in this case, it is worth reviewing the characteristics of the selected device. For comparison, the Huawei P8 supports microSDXC cards, but only up to 64 GB. The Sony Xperia Z5 allows models up to 200 GB, while the LG G4 allows up to 128 GB. In turn, Kruger&Matz Live 2 only supports maps microSD memory HC up to 32 GB. Before choose a memory card for your smartphone You need to check all the nuances so that you don’t encounter an unpleasant surprise later.

What speed?

microSD memory cards are divided into several classes, which determine the minimum speed at which the device can write data. Slow class 1 achieves only 1 MB/sec, which is too weak. Fortunately, this type of model is no longer commercially available. It is also difficult today to buy cards of class 2 (2 MB/s) and class 4 (4 MB/s). You can also find class 6 models (6 MB/sec), but mostly class 10 models predominate, which reach up to 10 MB/sec. They are great for saving pictures from high resolution and video recording. For this purpose, there are also cards of class U1 (10 MB/sec) and U3 (30 MB/sec). Once again, it is worth emphasizing that this is the minimum value that such cards can achieve. And although theoretically a class 10 card is no different from a U1 card, the second one will be much faster.

It is also worth paying attention to the data bus, which is designated as UHS. There are two standards: UHS-I with a maximum speed of 104 MB/sec and UHS-II, which can reach 312 MB/sec. These, however, are only the capabilities of this bus, and not the actual transfers received via memory cards. In addition, this type of model is mainly used only in professional devices. A class 10 microSD memory card is quite suitable for a smartphone for home use. It can even cope with saving video in 4K format.

Who is the manufacturer?

Finally, you just have to decide for yourself - which manufacturer should you trust? There is no clear answer to this question. Although memory cards are fairly reliable products, you can always end up with a model that breaks, and all data will be irretrievably lost. It should be noted that the models of respected and famous companies this risk is minimized. There are several manufacturers that you can trust. It is worth looking for memory cards from brands such as: SanDisk, Kingston, Samsung, Sony, A-Data, Transcend, Toshiba, Lexar. Each of these companies provides reliable quality.

Modern flagship and even budget phones are equipped with large built-in memory. They can even have 8-16 GB of memory (and flagship smartphones have all 128 GB), and this does not include a flash drive. However, for many users this is not enough. However, there is a good solution - choose a memory card for your smartphone. Which one is another question. To do right choice, you need to know what kind of cards there are, how fast they work, etc.

What is it for?

A memory card is designed to expand data storage space. If music, photos or videos do not fit on the phone’s “native” memory, then it is appropriate to think about which memory card to choose for your smartphone. Most phones have special connectors for connecting such cards. All of them support the MicroSD format. Cards of this format are compact and most efficiently built into the case itself, which is why they take up little space. Certain models use universal slots into which you can insert either a SIM card or a flash drive.

So users can choose: either expand the memory, or use two memory cards at once. Smartphones with this solution are most often budget ones. Before choosing a card, you need to find out whether your phone supports the required types of flash drives. This is indicated in the technical specifications for the phone and on the manufacturer’s website. Also on the case, in the area of ​​the flash drive slot, the format for the card that can be used is indicated.

Memory types

When choosing the best memory card for your smartphone, the first thing you need to consider is the type. There are only 3 standards:

  1. MicroSD - the capacity of these cards does not exceed 4 GB.
  2. MicroSDHC - up to 32 GB.
  3. MicroSDXC - up to 2 TB.

The latter type of card can be inserted into a standard MicroSD slot, but it must be supported operating system. Therefore, when choosing such a drive, you must check whether the phone’s OS supports memory cards of this standard. Most often, drives of this type are supported by flagship phone models; budget phones are limited to the MicroSDHC standard.

Recording speed and class

The higher the card class, the faster the data exchange between devices (writing and reading files). Currently there are cards with three recording classes:

  1. Speed ​​Class (letter C). Write speed can vary from 2 to 10 MB/s.
  2. UHS Speed ​​Class (U). Speed ​​from 10 to 30 MB/s.
  3. Video Speed ​​Class (V) - from 6 to 90 MB/s.

The final speed depends on the class. For example, a Class 10 memory card (Video Speed ​​Class 10) has a write speed of 10 MB/s or more. Such flash drives are used for recording videos in FullHD format, as well as for streaming.

Volume

Modern drives can have a capacity from one gigabyte to two terabytes (2000 GB). Of course, the price of memory cards greatly depends on the capacity. However, when choosing, it is worth considering that phones have limitations on the volume of storage devices that can be connected to them. Many budget smartphones are designed to connect a card up to 16 GB. Therefore, they will not be able to work with a 32 GB drive. Hence the misunderstanding among people whose smartphones do not see memory cards. The specifications must indicate what size card the phone can work with. And if you install a 32 GB flash drive into a phone that only supports 16 GB, it simply won’t recognize it.

Manufacturers

There are many second-rate manufacturers who offer their products in the market. However, the majority are occupied by well-known and well-established companies:

  1. SanDisk.
  2. Kingston.
  3. Transcend.

Silicon Power products enter the market quite confidently, offering users inexpensive but fairly good solutions. When talking about which memory card to choose for a smartphone, we can first recommend the four manufacturers mentioned above.

File system

Most flash drives are formatted in the FAT32 file system. It has the disadvantage of not supporting volume sizes larger than four gigabytes. This means that trying to record a movie of at least 4.5 GB in size onto a flash drive will not work. The maximum file size cannot exceed 4 GB, which is bad because it imposes a number of restrictions on users.

Another drive file system is exFAT, and there is no such limitation. However, the device itself must support such file system in order to be able to read a flash drive of this format. Otherwise, you will encounter a situation where the smartphone does not see the memory card. This is also required in the specifications for the phone.

Durability

All information on media cannot be stored forever, since they have a certain service life. On average, the media resource is 10,000-1,000,000 rewrite cycles, although in practice the figure is lower. In general, the longevity of a MicroSD drive depends on its use and assembly. Models from unknown brands are not subject to strict control during production, so they may break after 2-3 weeks of use. Therefore, if you don’t know which memory card to choose for your smartphone, then it’s better to give preference to a well-known manufacturer, even if the price is a little higher.

Rating of the best

Considering the fact that almost all phones can shoot video in FullHD format, you need to choose a class 10 memory card. The best are the following:

  1. ADATA Premier (volume available in the range of 8-128 GB).
  2. Transcend MicroSDHC (8-256 GB).
  3. SanDisk Extreme (16-128 GB).
  4. SanDisk Extreme Pro (64-128 GB).
  5. SanDisk Ultra (8-128 GB).
  6. Memory cards for the Samsung EVO smartphone (16-128 GB).

The cards mentioned above have an almost ideal price-quality ratio, they satisfy customer requests, collect positive reviews, work great and allow you not only to save photos, but to quickly record video in FullHD format.

ADATA Premier

The price of an ADATA Premier memory card will be 500 rubles for the 16 GB version. Flash drives in this series have a good price and high quality, are reliable and durable, and perform well when recording video in resolutions up to FullHD.

In general, this line includes memory cards with a capacity of up to 128 GB, but their price is higher. And they are only suitable for those users who store a lot of data on their phone.

  1. Protection.
  2. Reliability.
  3. Lifetime warranty on the card from the manufacturer.
  4. High recording speed.

Flaws:

  1. The line is limited in terms of memory capacity.
  2. Higher price compared to similar drives.

Transcend MicroSDHC

For 400 rubles you can purchase a model with a memory capacity of 16 GB. Its characteristics correspond to the previous memory card in the rating; it has a high data exchange speed. However, the entire line has a capacity limitation of 256 GB. In general, Transcend has long established itself as a reliable manufacturer of high-quality devices, so there should be no problems with their flash drives.

Advantages:

  1. Reliability.
  2. High recording speed.
  3. Lifetime warranty.

SanDisk Extreme

The cost of this card is 2100 rubles, and this is for a model with a memory capacity of only 32 GB. A very expensive, but also durable card, different from standard models. It is shockproof, waterproof, and X-ray resistant. It is suitable for use in extreme conditions. The maximum capacity of a card in this line is 128 GB.

The price is the main disadvantage of this model. However, the technical characteristics fully justify the high price.

  1. Lifetime warranty.
  2. Write speed.
  3. Can be used under any conditions.
  1. High price.

There is also a more advanced version of this card - SanDisk Extreme Pro. From the previous one (without Pro consoles) it has a higher recording speed, which allows you to record video in best quality and faster. But the fact is that the entire line is represented by only two models - with a capacity of 64 and 128 GB. Few users want to purchase it. Most often in similar protection, which a flash drive has, is simply not necessary.

SanDisk Ultra

For just 350 rubles you can buy an inexpensive and good flash drive for your smartphone. She has classic characteristics, low price, and the manufacturer is reliable and well-known. Given its parameters, the flash drive is cheaper than other models, and the model range includes cards with different memory capacities, so there is plenty to choose from.

Samsung EVO

These cards from Samsung cost an average of 500 rubles (price for the version with 16 GB of memory), they are water and thermal protection, and are also protected from magnetic fields and X-ray radiation. At the same time, the exchange speed is quite high. As for the price, it is slightly higher than the cost of similar models, but the price tag is due to the presence of protection.

Silicon Power

For a flash drive with 8 GB memory from Silicon Power you will have to pay 550 rubles. It's expensive for such a volume. In addition, the flash drive belongs to class 4, so the writing speed will be low. However, it is not intended for recording FullHD video; it is better to save photos and audio files on it.

Pros - durability. The memory card is actively used in phones that do not require high technical requirements. The disadvantage is the price. Given its characteristics (low recording speed, small volume), the cost of 550 rubles seems unfair. Therefore, models from Silicon Power can be recommended last. When choosing, you first need to consider models from manufacturers that are higher in this rating.

Conclusion

As a conclusion, you can answer common questions. In particular, many users want to know whether it is possible to buy cheap memory cards. In principle, it is possible, but it is advisable to store on them only information that you do not mind losing. The risk is large, so it is advisable to “dump” important documents in parallel onto other media.

It is also completely unnecessary to look for a class 10 memory card in order to insert it into an inexpensive smartphone. If the phone cannot shoot video in FullHD resolution, then a regular class 4 memory card is enough for it. As for the size of the card, everything is individual. Many users do not need a flash drive at all, since the built-in memory is enough for them. For others, even 128 GB of memory is not enough due to large quantity stored photos, music and video files. But in any case, when choosing a card, you need to take into account what maximum volume the smartphone supports. There's no point in trying to cram a 32GB card into a phone if it only supports a maximum of 16GB.

And one last thing. Almost all smartphones with a memory card slot support drives from all manufacturers. It does not happen that, for example, Samsung phones only support cards from Samsung.

Today we will talk about memory cards for DVRs and action cameras. I think you know that not every memory card will work correctly in your recorder. How to choose correct map memory? What should you pay attention to when choosing a memory card and which models/brands should you recommend?

Why not just any card will do?

Modern DVRs record with HD/FullHD/QHD resolution, and every year there is a growing trend in the number of pixels. But, in addition to resolution, there is also bitrate. This is the speed of the stream being written to the memory card, depending on the model, even with the same resolution, this parameter can change quite a lot. The DVR manufacturer often writes in the instructions - support for MicroSD memory cards (the most popular format) up to 32/64/128/256GB 10th grade. But he usually doesn't write anything about the bitrate of his stream. You can find out these numbers only by looking at the technical information of the recorded video or the profile forum thread of the selected gadget model.

How to choose a memory card

Without going into the technical details of memory chips (MLC NAND is better) and specifications, pay attention to the 2 main characteristics of the card indicated right on it. This is the speed class (class 10) and UHS parameter (U1 or U3).

If you have:

  • 2 channel device
  • 1 channel device with average recording bitrate
  • device with QHD (2k) resolution

Then regular class 10 memory cards will still suit you With index U1 and recording speed from 18 to 22 mb/s. It should be taken into account that a class 10 card provides a minimum speed of 10mb/s, and this may not be enough in most modern DVRs. Therefore, you shouldn’t just navigate by class. Don't look at loud labels on memory card packaging. Usually the speed indicated there is not write speed, but read speed. What is important to us is recording; as a rule, this characteristic is much more modest than reading, so marketers try to hide it. If you have:

  • 4k action camera/dvr
  • DVR with QHD resolution for 2 cameras
  • device with very high bitrate recording

Most likely you will need a class 10 memory card with index U3. It provides minimal recording at speeds up to 30mb/s. In some cases, this will not be enough, so for 4k with a bitrate of more than 70-100mbit/s, we recommend top-end (or pre-top) cards with the U3 index in the line of various brands, where the recording speed is from 50mb/s.

How to find out the WRITE speed on a memory card?

Only experimentally through special programs. Before purchasing, you need to look for tests on the Internet for the memory card you have chosen and see the writing speed. Or you can test the memory card yourself using the CrystalDiskMark program. Please note that many maps show maximum speed recording only if you have a card reader that supports USB3.0; your USB port in your laptop or computer should also be the same. The computer should not be performing any other tasks during testing.

More programs

  1. Mydisktest - a program for testing USB Flash media for bad areas
  2. Panasonic SD formatter - heals and restores almost any flash drive for mobile devices and more
  3. Check Flash - designed to check the performance of flash drives, and also allows you to use tests to determine the instant read/write speed

How to format a memory card

Attention, like all manufacturers in their instructions, we recommend formatting any memory card once every 2 months at least if you want to extend its life. This can be done either with the built-in tools of the camera or recorder, or on your computer. Never format an Sdxc type memory card (often with a capacity of 64gb or more) in devices that support the Sdhc type. Your card reader or adapter must be able to work with Sdxc.

You can use a special program for PC or MAC called SD Card Formatter. Set the options in the settings as shown in the figure on the right.

The best memory card for a DVR

Unfortunately, not all memory cards, even from famous brands, are so reliable. Recommended brands to check out include:: Sony, Toshiba, Lexar, Transcend, Samsung, Pny.

Finally, let's see a list of specific memory cards that we recommend for purchase and use.

TOP 5 most popular cards memory you will find in our other article,.

In the regular recording segment from 15 to 22 mbit/s index U1

  • transcend premium 300x 16/32/64
  • transcend premium 400x 16/32/64/128
  • transcend high endurance U1 16/32/64
  • transcend ultimate 600x 8/16/32
  • toshiba exceria U1 16/32/64/128
  • lexar high endurance U1 16/32/64
  • Lexar 300x U1 16/32/64
  • Lexar 600x U1 16/32/64/128
  • Sony SR-UY3A U1 16/32/64/128
  • samsung evo U1 16/32/64/128

In the segment of increased bitrate up to 50m mbit/s index U3

  • Sony SR-UX2A u3 16/32/64/128
  • toshiba exceria U3 32/64
  • transcend ultimate U3M 16/32/64/128
  • samsung pro U3 16/32/64
  • samsung evo + U3 32/64/128/256
  • viofo U3 32/64
  • transcend USD300S 16/32/64/128
  • transcend C10V High Endurance 16/32/64/128
  • viofo Professional High Endurance

In the high bitrate segment from 80 mbit/s of the U3 index

  • transcend ultimate 633x U3 32/64
  • toshiba exceria PRO U3 32/64
  • lexar professional 1000x 32/64/126/256
  • lexar professional 1800x 32/64/128
  • samsung pro+ U3 32/64/128
  • viofo U3 32/64
  • transcend USD500S 16/32/64/128

For 4k action cameras Cards from Sandisk or Kingston with the U3 index may be suitable, v30, A1. They work for quite a long time, since action cameras do not record continuously.

Guarantee

You've probably seen that many memory card manufacturers provide a long warranty period, from 3 to 5 or more years. And even a lifetime warranty. Unfortunately, this warranty has limitations, usually stated small print conditions, and, of course, does not apply to devices with frequent data rewriting, such as action cameras and video recorders. Therefore, do not rely on full warranty service when used in recorders. For example, here is a screenshot of the warranty conditions for Samsung cards using one example:

Conclusions

Be careful when choosing a memory card for your gadget; do not buy unknown Chinese brands on Aliexpress for use in a DVR or action camera; they are suitable for simpler devices such as a smartphone or player.

If you definitely want to take a good card, choose one with nand MLC or SLC flash memory type. This type of memory allows you to rewrite cells 2-2.5 times larger than conventional TLC chips.

Our kit always supplies only branded cards from well-known manufacturers with the speed required for your device.

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