Protac Hl Headlamp UsbProTac HL USB Headlamp USB cord, elastic and rubber straps Clam The HL Series now has a hands free, USB rechargeable lighting solution! When your task requires both hands and a bright light with a wide flood beam, reach for the ProTac HL USB Headlamp. Charge on the go using almost any USB source. Plus this headlamp accepts multiple battery sources as a backup, so youll always have power when you need it.