... usb flash dirve, pen usb flash drive,usb flash Unit Size:145*16mm 4 in 1,laser,pen,usb drive,compass Material:Metal smart usb flash dirve, flash driver,usb ... speed USB2.0 portNo physical drive required Plug-and-play; no external power supply required, USB bus-poweredAvailable Capacity:16MB~ ... Temp. 50-80°CAccessoriesUSB cable,CD,Manual, Slingoptional usb flash drive, pen usb flash drive,usb flash