SanDisk Extreme PRO 64GB – Specifications 1. UHS-I Version (SDXC / microSDXC) Capacity: 64GB Interface: UHS-I Speed Class: Class 10 / U3 / V30 Read Speed: Up to 170–200 MB/s Write Speed: Up to 90 MB/s Durability: Water-proof, shock-proof, X-ray-proof, and temperature-proof Included: 1-year RescuePRO file recovery software