Usb 30 stick micro usb stick memory size 64 gb read speed 40 mbs other interface micro usb backward compatible with usb 20 memory type flash memory material aluminum series hama laeta twin special feature usb otg manufacturers warranty 5 years additional information read and write speed may vary depending on the capacity compatible operating systems mac os 9 windows xp windows vista windows 7 windows 8 windows 10 android 40 fastener with cap c