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Micro SD cards are essential for expanding storage on smartphones, cameras, and gaming devices. Selecting the right card ensures smooth performance and prevents data loss. Understanding key specifications will help you make an informed decision for your specific needs.
EXPAND YOUR STORAGE. Insert your card to add massive storage up to 1.5TB[1] to your Android smartphones and tablets, digital cameras, and laptops.
SPACE FOR MORE. With expansive capacities up to 1.5TB[1], capture and store hours of Full HD video[4], movies, music, games, photos, and podcasts.
MOVE FILES FAST. Use your card with the SANDISK QuickFlow microSD UHS-I Card USB-A Reader[6] to achieve up to 195MB/s[2] read speeds [128GB-1.5TB models] and offload your content fast.
LOAD APPS IN A SNAP. Rated A1[3], the SANDISK Ultra microSD card is optimized for faster app launch and overall app performance.
EASY CONTENT MANAGEMENT. Easily back up, organize, and transfer your photos and videos with the SANDISK Memory Zone desktop or Android mobile app[5].
EXPAND YOUR STORAGE. Insert your card to add massive storage up to 1.5TB[1] to your Android smartphones and tablets, digital cameras, and laptops.
SPACE FOR MORE. With expansive capacities up to 1.5TB[1], capture and store hours of Full HD video[4], movies, music, games, photos, and podcasts.
MOVE FILES FAST. Use your card with the SANDISK QuickFlow microSD UHS-I Card USB-A Reader[6] to achieve up to 195MB/s[2] read speeds [128GB-1.5TB models] and offload your content fast.
LOAD APPS IN A SNAP. Rated A1[3], the SANDISK Ultra microSD card is optimized for faster app launch and overall app performance.
EASY CONTENT MANAGEMENT. Easily back up, organize, and transfer your photos and videos with the SANDISK Memory Zone desktop or Android mobile app[5].
CAPTURE LARGER THAN LIFE. Unlock startling 5K[3] point-of-view and pristine high-res stills with video speed class ratings of U3 and V30[4].
SPEED BARRIERS SHATTERED. Save precious moments with rapid read speeds up to 245MB/s[2] and write speeds up to 170MB/s[2] [256GB-1TB capacities[1]].
MAXIMIZE WITH MASSIVE CAPACITY. Record longer and store more with up to 2TB[1] of storage.
DURABILITY YOU CAN COUNT ON. SANDISK microSD cards are temperature proof, humidity proof, waterproof, shock proof, drop proof, magnet proof, X-ray proof and wear-out proof[7].
EASY CONTENT MANAGEMENT. Easily back up, organize, and transfer your photos and videos with the SANDISK Memory Zone desktop or Android mobile app[10].
Fast Transfer Speed: The TF memory card adopts Speed Class UHS-I provides with 80MB/s of read speed and 20MB/s of write speed(Note:TF cards transfer speed may vary depending on capacity, test platform hardware, test software, and operating system)
Wide Compatibility: 32GB SD card works with Android phones, tablets, cameras, gaming consoles, dashcams.(Note: May not suit high-speed write scenarios.)
Note on Usable Capacity: The available space on a 32GB card typically appears as approx 28.8GB on your device.This is a standard industry practice.(If the actual capacity differs significantly from the actual capacity, the capacity may be hidden.）
By default the 32GB micro SD card is formatted as FAT32: Some devices may require reformatting the card or may not be compatible with microSD cards. Check manual before ordering.
Note: This is a microSD card, NOT a standard SD card. Package includes two microSD cards + one shared adapter (not one per card). Insert either card into the adapter to fit standard SD slots
Important Compatibility Notice: The 32GB U1 Micro SD card conforms to the SDHC memory card standard. Due to differences in the support specifications of memory cards among different brands and models of cameras and devices, some older cameras or certain...
Lexar 64GB Micro SD Card supports up to 100MB/s read speed and up to standard write speed for data transfer. (Based on internal test environment of Lexar, so the actual speed may vary with different host devices and environments. For devices that don't...
Lexar 64GB Micro SD Memory Card supports UHS-I, U3, Speed Class 10, Video Speed Class 30 (V30) , which offer high read speed, fast file transfer speed, smooth as well as continuous shooting and Full HD video 4K and 1080P recording. For apps, A1 (App...
Lexar 64GB microSD Card supports up to 3 hours 4K video, or up to 10 hours 1080P video, or 18,800 photos, 9,900 songs. (1GB=1,000,000,000 bytes.) (Due to different capacity algorithms and partial capacity are used for system files, management and...
Lexar microSDXC card supports waterproof (Provide protection against water immersion for up to 30 minutes and water depth up to 1 meter.), shockproof, extreme temperature resistance [operating temperature: 0° ~ 70° C, storage temperature...
Lexar microSD Card is compatible with smartphone, tablet, drone, camera and other Android devices. It provides you with speed and storage to capture more adventures OTG, also give you fast gaming experience
【Built for Dashcams & Security Cameras】Engineered for 24/7 loop recording, this card delivers stable performance in dashcams and surveillance devices—even in extreme heat or cold.Includes SD adapter for flexible use.
【No Frame Drops, No Gaps in Footage】Supports sustained Full HD (1080P) recording to ensure smooth video capture—no lags, skips, or missing frames.
【Fast Read Up to 90MB/s】Quickly access event footage and transfer clips with ease—ideal for emergency playback. The read and write speed is based on internal testing conducted under controlled conditions.(1GB = 1,000,000,000 bytes. Actual user...
【Data Protection You Can Trust】Resistant to temperature, shock, water, and X-rays—protects your videos from sudden impact, power loss, or harsh conditions.
【Built for Daily Use】Check if your device is compatible with MicroSD capacity. Available storage capacity is higher than 116 GB. The SD logo is a trademark of SD-3 C, LLC.
[NOT compatible with Switch2] Please note that this product is not a microSD Express card and is not compatible with Switch2 for game storage or save data. If used in the Switch2, it may only support limited functions such as storing screenshots or...
High compatibility for different types of devices including smartphones, tablets, Drones, Android Tablets, Tablet PCs, Action Cameras, DSLR and 4K or Full HD camcorder.
Compatible with Nintendo Switch *In order to use a microSDXC card on the Nintendo Switch console, a system update is required.* See Nintendo official site for more details
Compatible with Nintendo-Switch (NOT Nintendo-Switch 2)
Save time with card offload speeds of up to 190MB/s powered by SanDisk QuickFlow Technology (Up to 190MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such...
Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately), Compatible with microSDHC, microSDXC, microSDHC UHS-I, and microSDXC UHS-I supporting host devices
Up to 130MB/s write speeds for fast shooting (Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes.)
4K and 5K UHD-ready with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (Compatible device required. Full HD (1920x1080), 4K UHD (3840 x 2160), and 5K UHD (5120 X 2880) support may vary based upon host device, file attributes and other factors. See...
Rated A2 for faster loading and in-app performance (A2 performance is 4000 read IOPS, 2000 write IOPS. Results may vary based on host device, app type and other factors)
Last update on 2026-08-31 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Micro SD Memory Cards
Understanding Micro SD Card Types and Classes
Micro SD cards come in various capacities and speeds, denoted by different standards. Look for:
SDHC (Secure Digital High Capacity): Up to 32GB capacity. Suitable for basic storage needs.
SDXC (Secure Digital eXtended Capacity): Up to 2TB capacity (though commercially available cards are typically 1TB or less). Ideal for high-resolution photos, 4K video, and larger files.
SDUC (Secure Digital Ultra Capacity): Up to 128TB capacity. Still emerging and less common for consumer devices.
Speed Ratings Explained
Speed is crucial for performance, especially with video recording and large file transfers. Key ratings include:
Speed Class (C2, C4, C6, C10): Indicates minimum sequential write speed in MB/s. C10 is the most common and generally recommended for most uses.
UHS Speed Class (U1, U3): For UHS-I and UHS-II buses. U1 guarantees at least 10MB/s, while U3 guarantees at least 30MB/s. Essential for 4K video recording.
Video Speed Class (V6, V10, V30, V60, V90): Guarantees minimum sustained write speeds for video. V30 is recommended for 4K, while higher classes are for 8K or professional video.
Application Performance Class (A1, A2): Measures random read/write performance, important for apps running directly from the card. A2 offers better performance than A1.
Choosing the Right Capacity
Capacity needs vary greatly. Consider:
Smartphones/Tablets: 64GB to 256GB is often sufficient for casual users.
Action Cameras/Drones: 128GB to 512GB is recommended for high-resolution video recording.
DSLR/Mirrorless Cameras: 128GB or higher, especially for burst shooting or RAW files.
Gaming Consoles: Check console specifications; 128GB to 512GB can significantly expand game libraries.
Durability and Reliability
Many cards offer enhanced durability features. Look for cards that are:
Waterproof
Shockproof
Temperature-proof
X-ray proof
These features add peace of mind, especially if the card will be used in demanding environments.
Frequently Asked Questions
What is the difference between UHS-I and UHS-II?
UHS-I and UHS-II refer to different generations of the Ultra High Speed bus interface. UHS-II offers significantly faster data transfer speeds due to an additional row of pins, making it ideal for high-speed continuous shooting and 4K/8K video.
How do I know if a micro SD card is compatible with my device?
Check your device's manual or manufacturer's website for supported SD card types (SDHC, SDXC, SDUC) and maximum capacity. Using an incompatible card may result in it not being recognized or performing poorly.
What does A1 vs A2 mean on a micro SD card?
A1 and A2 are Application Performance Classes that indicate how well a card handles running apps directly from it. A2 cards offer superior random read and write speeds compared to A1 cards, leading to a smoother app experience.
Is it better to get a faster card or a larger capacity card?
This depends on your primary use case. For recording high-resolution video or taking rapid bursts of photos, speed is paramount. For simply storing many files like music or documents, capacity is more important.
Can I use a micro SDXC card in a device that only supports micro SDHC?
Generally, no. Devices that only support SDHC are not designed to read SDXC cards, which use a different file system. Conversely, SDXC-compatible devices can usually read SDHC cards.
How important is the V rating for video recording?
The Video Speed Class (V rating) is very important for recording video, especially at high resolutions like 4K or 8K. It guarantees a minimum sustained write speed, preventing dropped frames and ensuring smooth footage.
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