Built for extreme conditions temperature proof, water proof, shock proof, and x-ray proof3 Delivers 4K Ultra HD and Full HD video recording and playback1 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/5 Up to 128GB2 for more space to catch the thrill EXTREME SPEEDS FOR FAST TRANSFER, APP PERFORMANCE, AND 4K UHDCapture more fast action and record more Full HD or 4K UHD video2 with your Android based smartphone, interchangeable-lens camera, drone or GoPro® action camera. The SanDisk Extreme microSD UHS-I Cards are built tough for extreme durability under challenging environmental conditions4. Extreme speeds let you capture every detail of adventure and take the wait out of transferring your videos between devices. Storage capacities from 32GB to 128GB1 expand your device's memory and let you record 4K UHD video2.THE SPEED YOU NEEDThe best stuff happens fast. With extreme write speeds up to 90MB/s5, SanDisk m