Lightweight & compact, the TLRTM RM 1 and TLRTM RM 2 Weapon-Mounted Tactical Lights features the latest in shock-proof LED technology for high lumen operation. The TLRTM RM 1 provides 1.5 hours of runtime from a single CR123 lithium battery delivers 500 lumens output. The TLRTM RM 2 provides 1.5 hours of runtime with two CR123 lithium batteries featuring 1000 lumens output. Both models delivers a powerful beam with extensive range, good peripheral coverage and a selectable strobe mode. Ergonomically friendly multi-function tactical tail switch. Remote switch input option (remote switch included with purchase). Securely attach/detach from any long gun with a MIL Standard 1913 Rail. 500 lumens; 140 m beam; runs 1.5 hours; runs 3 hours on strobe Features independently operating push-button switch or remote pressure switch Remote pressure switch exits at 90° providing improved wire routing option while preserving rail space Safe off feature prevents accidental activation; saves batteries Engineered optic produces a concentrated beam with optimum peripheral illumination Securely attaches to long guns with MIL Standard 1913 Rails Packaged as a kit offering everything you need to mount to your long gun (remote pressure switch kit, key kit) Powered by one CR123A lithium battery (included) IPX7; waterproof to 1m for 30 minutes 3.2” (8.12 cm); 2.74 oz. (77.9 g)