Usb 20 stick a limited edition to celebrate batmans 75th anniversary memory size 8 gb read speed 18 mbs write speed 5 mbs encryption 256 bit aes backward compatible with usb 11 memory type flash memory material plastic series emtec collector special feature splash proof additional information read and write speed may vary depending on the capacity compatible operating systems mac os 10 mac os 10 windows 7 windows 8 windows vista windows xp linux 2