The TMT A1 flashlight features a Momentary-On switch, with High-Beam, Low-Beam, and Strobe options on the same tailcap switch! Made from aircraft-grade aluminum, with advanced regulated circuits for maximum output, this light uses one AA battery (included). With just one AA battery, though, the light puts out 130 lumens on high beam and strobe modes, and a low-beam output of only 11 lumens. You can still read a map on low-beam, and the light will last up to 28 hours on low! The tail cap features a momentary-on mode, it has a spring-metal pocket clip, anti-roll ring, breakaway lanyard, and this light is tested to ANSI FL1 standard.