Hiksemi Class 10 MicroSDXC 64GB Specifications: Capacity: 64GB Max. read speed: 92MB/s Max. write speed: 40MB/s NAND: TLC Format: MicroSDXC Dimensions: 0.59"x 0.43" x 0.04"(14.99mm x 10.92mm x 1.02mm) Operating temperature: 0 °C to 70 °C Storing temperature: -25 °C to 85 °C Compatibility: MicroSDXC 7 Year Warranty