Micro sd card micro sdhc card memory size 8 gb read speed 20 mbs file format fat32 operating voltage 2 7 3 6 v device class mobile phone tablet pc computer dslr digital camera camcorder printer macbook manufacturers warranty 5 years standard sd 301 sdhc class 10 adapter sd card adapter usb adapter dimensions 15 mm x 11 mm x 1 mm weight 04 g