Usb 20 stick memory size 8 gb encryption 256 bit aes backward compatible with usb 11 memory type flash memory materials rubber metal series tribe usb special feature splash proof certificatessafety fcc manufacturers warranty 2 years additional information read and write speed may vary depending on the capacity compatible operating systems linux mac os mac os 10 mac os 10 windows 7 windows 8 windows vista windows xp windows 2000 fastener with cap