Product name :Usb laser pen . Function :Laser pointer ,usb flash drive,ballpen Capacity :1GB-8GB . Usb interface :2.0 Product name :Usb laser pen .Function :Laser pointer ,usb pen drive, ballpen .Capacity :1GB -8GB (optional ).Laser disntance :200m .Usb interface:1.1 or 2.0.Battery:Usb charge .Can silkscreen or engrave customer logos .