High lumen tactical light that is USB rechargeable, so you can charge on-the-go using almost any USB source. It also accepts multiple battery sources to use as a back up so youll always have power when you need it. Features TEN-TAP Programming - Choice of three user selectable programs: 1.) high/strobe/low; 2.) high only; 3.) low/medium/high. The ProTac HL USB produces up to 850 lumens on high, 350 lumens on medium and 85 lumens on low. Uses Lithium-Ion battery (P/N 74175); also accepts two 3V CR123A lithium batteries or a commercially available Lithium-Ion 18650 rechargeable battery. Self-adjusting battery cradle secures multiple battery sizes and eliminates battery rattle. Durable, anodized aluminum construction; IPX4 water resistant; 1 meter impact resistance tested. Includes USB cord, 120V AC/12V DC adapters, removable pocket clip and tear resistant nylon holster.