Portable Waterproof Micro Memory Card Memory Card High Speed Memory Card 100MB/s Features: 1. Store up to 400GB of full HD video for more hours. 2. UHS speed class U1, video speed class V10 and speed class 10 are full HD video recording and playback. 3. Up to 100MB/s transfer speed allows you to move 1200 photos in one minute. 4. Load the app faster with a1 level performance. 5. Suitable for Android smartphones and tablets. 6. Waterproof, temperature proof, x-ray resistant, anti-magnetic, shockproof. Specification: Read speed: UP to 100MB/s (16 and 32GB up to 98MB/s) Memory card type: microSDXS, SDHC, TF Video SPEED: C10, U1, V10, A1 Support for Memory Card adapters Product attributes: original authentic, with security code and QR code Size: approx. 15 * 10mm / 0.6 * 0.4in Package List: 1 * Micro Memory Card Memory Card Note: 1 gb = 1000000000 bytes. Actual user storage is less. Up to 100MB/s read speed, low write speed. Based on internal testing, performance may be degraded depending on host device, interface, usage conditions, and other factors. 1 mb = 1000000 bytes. 1. Results may vary depending on factors such as host device and app type. 2. Full HD (1920x1080) video support may vary based on host device, file attributes, and other factors.  3. Need to download and install.  4. Based on 4.1GB photo transfer (average 3.5MB file) with USB 3.0 reader. Results may vary based on host device, file attributes, and other factors. 5. Results and full HD (1920x1080) video support may vary based on host device, file attributes, and other factors.