Usb 20 stick memory size 4 gb backward compatible with usb 11 memory type flash memory dimensions 54 x 21 x 10 mm material plastic series integral slide special feature splash proof manufacturers warranty 2 years weight 10 g additional information read and write speed may vary depending on the capacity compatible operating systems linux 24 linux 26 mac os 9 mac os 10 windows 7 windows me windows vista windows xp fastener retractable usb plug