finger Usb Flash Drive finger Usb Flash Drive 1: Uses the USB1.1/2.0 connection, supports hotly ... namely uses;2: Does not need the external power supply;3: capacity:16M,32M,64M,128M,256M,512M,1G,2G,4G ... - +70°C Preserved temperature: -50°C - +80°C finger Usb Flash Drive