FEATURES Ultra High-Speed Class 3 specification Supports 4K Ultra HD and Full HD video recording and playing Read and write speed up to 90MB and 45MB per second Waterproof, dustproof and x-ray proof New printing technology. Fulfill the goal of an eco-friendly product Lifetime warranty Product Specifications Model Color Card II Micro SDHC/SDXC UHS-I U3 Capacity 64GB Voltage 2.7V ~ 3.6V Operation Temperature 0C ~ 70C Storage Temperature -40C ~ 85C Data Transfer Rate Read: up to 90MB/s ; Write: up to 45MB/s[4] Weight 1g Dimensions micro SD 15.0(L) x 11.0(W) x 1.0(H) mm SD Adapter 32.0(L) x 24.0(W) x 2.1(H) mm Operating System Micro SDHC FAT32 format Supports only products with the Micro SDHC logo or slots complying with Micro SDHC memory cards. Supports only products with SDHC logo or slots complying with SDHC memory cards. (adaptor required) Micro SDXC exFAT format Supports only products with the Micro SDXC logo or slots complying with Micro SDXC memory cards. Supports only products with SDXC logo or slots complying with SDXC memory cards. (adaptor required) Write Protect Micro SD (NO) Micro SD to SD Adapter (YES) Warranty Lifetime warranty