Toshiba Exceria 16GB Micro SD Memory Cards UHS-I U3 (PFM016U-1EUS) Delivers up to 95 MB/s read speed7 and 60MB/s write speed - ideal for capturing fast-action photos and videos Experience UHS Speed Class 3 (U3) for 4K video recording and playback Maximize your compatible-mobile device performance for capturing stunning images with high-speed continuous shooting and 4K video recording Can operate after submersion in water (tap water, depth 1m) for 30 minutes (IPX7 compliant) X-Ray proof1 - can operate after contamination of X-rays(0.1Gy). (ISO7816-1 compliant) With storage capacities of up to 64GB, you'll make room for Full HD videos and thousands of high-resolution photos, without running out of space