Usb 30 stick memory size 64 gb read speed 210 mbs write speed 140 mbs backward compatible with usb 20 memory type mlc nand flash material metal series transcend jetflash special features splash proof shockproof dustproof certificatessafety ce fcc bsmi manufacturers warranty 30 years weight 12 g additional information read and write speed may vary depending on the capacity compatible operating systems windows 2000 windows xp windows vista windo