Speed Class Rating: Class 10 Features: Simple — as easy as plug-and-play Compliant — with the SD Card Association specification Secure — built-in write-protect switch prevents accidental data loss Compatible — with SDHC & SDXC host devices; not compatible with standard SD-enabled devices/readers File Format — FAT32 Dimensions — 24mm X 32mm X 2.1mm High-Speed Class Rating — Class 10: 10MB/s guaranteed minimum data transfer rate Note: these Class 10 cards are meant for HD video recording but do not support some simultaneous video and still capture features.