Ideal for Android Smartphones and tablets, and 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) Built for and tested in harsh conditions; temperature-proof, water-proof, shock-proof and X-ray proof