Multi-Fuel Innovation: Uses two non-rechargeable batteries (included) or one Streamlight USB rechargeable battery pack (not included) Shine the Light: 500 Lumens, 6800 Candelas, a beam distance of 165 Meters and a run time of 2.75 Hours on high mode Mission Ready: Ideal for your backpack, go bag, or pocket; Ready to use whenever you need it Choose your Mode: TEN-TAP programmable switch allows for user selection of one of three different programs: high/strobe/low (factory default), high only, or low/medium/high Built Streamlight Tough: IPX7 waterproof to 1 Meter for 30 Minutes; 2 Meter impact resistance tested