High speed: Up to 80MB/s(256G up to 95MB/s) read speed, up to 20MB/s(256G up to 90MB/s and 16G up to 10MB/s) write speed (compatible with Class10 and U1(256G with U3)). Enjoy full HD videos and photo without worrying not enough capacity. Great performance in action cameras, DSLRs, high-end smartphones, and tablets (adapter is not included). Resistant to Water, Temperature, X-ray and Magnetism. Large capacity helps you make full use of advanced digital devices to save cherished memories.