Usb 30 stick memory size 8 gb read speed 90 mbs write speed 15 mbs backward compatible with usb 20 memory type flash memory materials plastic rubber series patriot supersonic special features rubber shockproof waterproof certificatessafety rohs fcc ce manufacturers warranty 5 years weight 129 g additional information read and write speed may vary depending on the capacity compatible operating systems linux 24 mac os 9 windows me windows 2