Get extreme speeds for fast transfer, app performance, and 4K UHD. Ideal for your Android smartphone, action cameras or drones, this high-performance microSD card does 4K UHD video recording, Full HD video and high-resolution photos. The super-fast SanDisk Extreme PRO microSDXC memory card reads up to 170MB/s and writes up to 90MB/s. Plus, it�s A2-rated, so you can get fast application performance for an exceptional smartphone experience. At-a-Glance - Ideal for Android smartphones, action cameras and drones - Up to 170MB/s read and 90MB/s write speeds for fast shooting and transfers - Rated A2 for faster loading and in-app performance - 4K UHD-ready with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) - Shockproof, temperature proof, waterproof, and X-ray proof - Get the SanDisk Memory Zone app for easy file management Specifications Form factor: microSDHC and microSDXC Performance/speed: 64GB-1TB: Up to 170MB/s read speeds; up to 90MB/s write speeds. 32GB: Up to 100MB/s read speeds; up to 90MB/s write speeds. Card dimension: 10.92 x 14.99 x 1.02 mm SD adapter dimension: 31.75 x 23.88 x 2.03 mm Operating temperature: -13F to 185F (-25C to 85C) Storage temperature: -40F to 185F (-40C to 85C) Compatibility: Compatible with microSDHC, microSDXC, microSDHC UHS-I, and microSDXC UHS-I supporting host devices Apps: RescuePRO Deluxe data recovery software downloadable offer Support: Lifetime warranty