Usb 20 stick memory size 64 gb encryption 256 bit aes backward compatible with usb 11 memory type flash memory dimensions 81 x 29 x 11 5 mm materials rubber steel special feature waterproof manufacturers warranty 2 years weight 33 g additional information read and write speed may vary depending on the capacity compatible operating systems mac os 10 windows 7 windows vista windows xp fastener with cap integrated security password protection