Save time transferring content Quick read speeds of up to 170MB/s 8 let you transfer 1000 high-resolution photos & 30 minutes of 4K video (24GB) in less than 3 minutes. Write speeds of up to 90MB/S Capture fast-action photos or shoot 4K UHD video 2 with write speeds of up to 90MB/s.8 The San Disk Extreme® PRO micro SDXC UHS-I Card lets you shoot more & faster. Great for capturing 4K UHD video Ideal for recording outdoor adventures, weekend trips, or sporting events without skipping frames. With up to 1TB1, the San Disk Extreme® PRO micro SD UHS-I card lets you capture uninterrupted 4K UHD2 and Full HD video with its UHS Speed Class 3 (U3) & Video Speed Class 30 (V30) ratings. Load apps faster with A2 Get faster app performance for an outstanding smartphone experience thanks to the San Disk Extreme® PRO micro SD cardâs A25 Specification Durable design for use in extreme environments San Disk Extreme® PRO micro SDHC & micro SDXC UHS-I Cards are shockproof, temperature-proof, waterproof, & X-ray-proof, 3 so you can enjoy your adventures without worrying about the durability of your memory card. Compatible with Mobile Mate® USB (Universal Serial Bus) 3.0 reader Use the Mobile Mate® USB (Universal Serial Bus) 3.0 micro SD card reader with transfer speeds of up to 170MB/s 8, so you can move big files fast, move a lot of files fast or just make frequent file transfers that much quicker.