The RM160LSR features a high-power LED that outputs 160 lumens of intense white light and a red laser sight. Light of this magnitude is enough to dominate an aggressor's night adapted vision; ideal for military, law enforcement and self-defense. The included adjustable hinge mount design is ideal for rail-equipped pistols and long guns. It does not fit subcompacts. The included CR123A battery is for the light, while the 3 LR44 is for the laser.