The ProTac Rail Mount HL-X is a 1,000 lumen weapon-mounted light featuring a fixed mount for MIL-STD-1913 (Picatinny) rails or with the included M-LOK mount allowing for alternative mounting options to M-LOK and M-LOK compatible rail systems. It uses either a remote pressure switch or a standard push-button tail cap switch, and can run on multiple battery types. TEN-TAP Programming allows for selection of three different operating programs: 1) high/strobe 2) high only 3) low/high High: 1,000 lumens; 447m beam distance; 50,000 candela; runs 1.25 hours (CR123A); runs 1.75 hours (SL-B26) Low: 60 lumens; 111m beam distance; 3,100 candela; runs 21 hours (CR123A); runs 24 hours (SL-B26) Multi-Fuel: Uses two (2) CR123A lithium batteries Includes remote pressure switch, push-button tail cap switch, remote retaining clips, double-sided tape, zip ties, and M-LOK mount 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 with standard push-button switch installed (waterproof to 1 meter for 30 minutes); IP54-rated with remote pressure switch installed (water-resistant) Limited lifetime warranty