SanDisk Extreme cards are built tough for extreme durability even under challenging environmental conditions. Fast speeds reduce the time you are on hold while your pictures and videos move to your card or from your card to your computer. Storage capacities from 16GB to 128GB2 expand device memory and leave room to record video that is ready for the new 4K Ultra HD television screens and monitors. THE SPEED YOU NEED: The best stuff happens fast. With extreme write speeds up to 60MB/s, SanDisk memory cards give you the speed you need to capture every detail. Fast write speeds reduce the time you are on hold while you move pictures and videos to your card, so you are always ready to catch the next great shot, and enjoy smooth video playback. SHOOT 4K ULTRA HD VIDEO TODAY: Pro video performance with both Class 10 and UHS Speed Class 3 (U3) ratings lets you capture 4K Ultra HD and Full HD video. Your videos will meet todays highest resolution standards and will look stunning on the latest 4K Ultra HD TV screens and monitors, making this the ideal card for your 4K Ultra HD video-enabled smartphone, tablet or camera. SD ADAPTER FOR VERSATILITY: This card comes with a convenient SD card adapter, so you can also capture and access data on the card with any device that has an SD card slot. You will be able to use your memory card with SD enabled cameras, camcorders, tablets, and laptops. BUILT FOR EXTREME CONDITIONS: SanDisk Extreme microSD UHS-I Cards are waterproof, shockproof, X-ray proof and temperature proof to protect your memories from lifes mishaps. Take your phone or tablet to the snow, to the pool or to the desert. Your card will survive, even if your device does not. ALL THE MEMORY YOU NEED: Generous storage capacities up to 128GB mean you will not run out of the memory you need to work, shoot and share high resolution videos and stills. Key Features - Built for extreme conditions temperature proof, water proof, shock proof, and x-ray proof - Delivers 4K Ultra HD and Full HD video recording and playback - Meets the new UHS Speed Class 3 (U3) and UHS Video Speed Class 30 (V30) for 4K UHD4 - Transfer faster with read speeds up to 90MB/s - Up to 128GB for more space to catch the thrill Specification Read Speed: up to 90MB/s Write Speed: up to 40MB/s Video Speed: C10, U3 Form Factor: microSDHC Related Articles Manage memory on your phone with the Sandisk app. Here is how.