1-mile visibility at night and up to 100 yds. in broad daylight! A powerful 532 nM 5mW Green Laser provides easy-to-see contrast in all lighting conditions. Pressure pad activates the beam in an instant with only two fingers. Easy X and Y axis adjustment using set screws. Rugged, aircraft-grade 6061 anodized aluminum housing with reinforced internals so it resists recoil "rattling" off-target Tactical on / off pressure switch with approx. 14" cable Includes ring that attaches to a Weaver / Picatinny mount mount Uses long-life 3V CR123A lithium battery (included). Measures 4 1/2"l., weighs 7 1/2 ozs.