Verbatim sdhc secure digital high capacity sd 20 cards are designed to be used in compatible digital cameras portable music players camcorders smart phones pcs or other consumer applications key features capacity 8gb write speed 10mbsec read speed 10mbsec 2 year manufacturer warranty sdhc cards use a fat32file system a specification that was established for applications with higher capacity needs and are especially suitable for high quality video the increasing use of high def