The microSDHC cards offer higher storage capacities for more music, more videos, more pictures, more games more of everything you need in today39;s mobile world. The microSDHC card allows you to maximize today39;s revolutionary mobile devices. Kingston39;s microSDHC cards use the speed quot;classquot; rating that guarantee a minimum data transfer rate for optimum performance with devices that use microSDHC. Identical in physical size to today39;s standard microSD card, the microSDHC cards are designed to comply with SD specification version 2.00 and are only recognized by microSDHC host devices. They can be used as fullsize SDHC cards when used with the included adapter.