Features: Suitable for recording 4K and UltraHD video and continuous photo bursts, this Extreme Class 10 card from SanDisk has a UHS Speed Class 3 (U3) maximum read speed of an incredible 90MB/s and maximum write speed of 40MB/s - amazing for such a small memory card. The format and speed specifications of this card make it a sensible choce for use in video action cameras where fast writing speeds are required. As with all SanDisk cards, it is extremely robust and able to withstand water, extremes of temperature, shocks and X-Rays. The Right Card for Your Action Camera Training, planning, gear extreme sports require extreme readiness. To make sure you have a lasting record of the event from your own unique POV, you need the right camera and the right memory card, too. SanDisk Extreme microSD UHS-I cards deliver the speed, capacity, durability, and quality you need to make sure your adventure is captured in stunning detail, even if you blink on the way down. Built for Extreme Conditions Whether it's on a mountain top, in the desert or underwater, extreme adventures put you in extreme environments. SanDisk microSD memory cards are engineered and tested to withstand the challenges your adventures dish out - they're waterproof, temperature proof, shock proof, so you'll never miss those heart-in-mouth moments. Photographers worldwide trust SanDisk. The Speed You Need to Make the Leap The best stuff happens fast. With a UHS Speed Class 3 rating and read/write speeds up to 90MB/s/40MB/s. SanDisk memory cards give you the speed you need to capture every detail of adventure and take the wait out of transferring your videos between devices. When life has no rehearsal, make sure you have the speed to get it right the first time. Catch the Thrill in 4K Ultra HD Detail. When your memory card is 4K Ultra HD ready, the video you capture is more than moving pictures. With 4K Ultra HD resolution you won't just watch the video, you'll relive the adrenaline rush. And your extreme feats will look smashing on today's newest, biggest 4K Ultra HD TVs and monitors. Expect your friends to be impressed by your guts and your photography. Technical Details: Capacity: 32GB x 2 (Twin Pack)*** Form factor: microSDHC™ (32GB) Performance/speed: Up to 90MB/s read and up to 40MB/s write speed Card dimension: 0.59in x.043in x.04in (14.99mm x 10.92mm x 1.02mm) Operating temperature: -13ºF to 185ºF (-25ºC to 85ºC) Storage temperature: -40ºF to 185ºF (-40ºC to 85ºC) Temperature proof, water proof, shock proof, and x-ray proof Compatibility: Compatible with microSDHC and microSDHC UHS-I supporting host devices Class 10 and UHS Speed Class 3 (U3) for 4K Ultra HD (3840x2160p) and Full HD video (1920x1080p) *** Some capacity not available for data storage To check if this is compatible with your device please use the SanDisk Product Compatibility Service. http://pct1.sandisk.com/NewSearch.aspx 1. Up to 90 MB/s read speed; up to 40 MB/s write speed. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1 MB=1, 000, 000 bytes. 2. Full HD (1920x1080p) and 4K Ultra HD (3840x2160p) video support may vary based upon host device, file attributes and other factors. See manufacturer's website for more details. 3. 1 GB=1, 000, 000, 000 bytes. Actual user storage less. 4. See product packaging Warranty: In the unlikely event that you have a problem with your purchase please look at our terms and conditions which sets out how you to make a return under warranty. Legal Disclaimer: We are not the manufacturer of the products sold on this site. Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented on our website. Please always read labels, warnings, and directions provided with the product before using or consuming the product. Please see our full terms and conditions