Streamlight ProTac Rail Mount HL-X Pro Gun Light - Black - The ProTac Rail Mount HL-X Pro is a long range, low-profile, gun-mounted light that produces 50,000 candela and shines for 447 meters. Its Jack-Cap tail cap switch offers operational switch redundancy with both push-button operation or remote pressure switch operation. Features Multi-Fuel: Uses one (1) Streamlight SL-B26 protected Li-Ion USB rechargeable battery pack; also accepts two (2) CR123A lithium batteries TEN-TAP programming allows for selection of three different operating programs: 1) high/strobe 2) high only 3) lowithhigh High: 1,000 lumens; 50,000 candela; 447m beam distance; runs 1.25 hours (CR123A); runs 1.75 hours (SL-B26) Low: 60 lumens; 3,100 candela; 111m beam distance; runs 21 hours (CR123A); runs 24 hours (SL-B26) Strobe: runs 2.5 hours (CR123A); runs 3.5 hours (SL-B26) Integrated rail clamp attaches to MIL-STD-1913 (Picatinny) rails Easy to attach, secure mounting Durable, anodized aluminum construction with impact-resistant tempered glass lens IP67-rated; waterproof to 1 meter for 30 minutes (without remote pressure switch installed); IP54-rated; water-resistant (with remote pressure switch installed) Limited lifetime warranty