Usb 20 stick memory size 8 gb backward compatible with usb 11 memory type flash memory dimensions 35 5 x 12 3 x 4 5 mm series silicon power touch special features splash proof shockproof certificatessafety rohs preinstalled software portable outlook express trail weight 45 g additional information read and write speed may vary depending on the capacity compatible operating systems linux 26 mac os 10 windows 7 windows vista windows xp