Toshiba high speed n102 8gb sdhc memory card capacity 8 gb interface sdhc dimensions 320 mm l x 240 mm w x 21 mm h weight approx 2 g warranty 5 years click here for further information disclaimers class 4 cards are fully compliant with the latest sd association specification we guarantee a minimum write and read speed of 4 mbs details here you find further product specifications speed class class 4nb