The TLR-1 HL delivers a 1,000 lumen beam of light for maximum illumination. A wide pattern illuminates large areas to light rooms and outdoor spaces. This light attaches and detaches to Glock-style and Picatinny rails without the need of tools or unsafe hand placement. Includes keys for Glock-style, Picatinny, Beretta 92, S&W 99 & TSW, and Sig P320. Ambidextrous momentary on/off switches make manipulation easy for all users. This light also features a programmable strobe for a variety of needs. The TLR-1 HL is powered by two CR123A batteries that provide up to 1.5 hours of use.