Mft home defense back up light picatinny mounted white/red FEATURES-Power button has one click low, second click high, hold for 2 seconds for primary light functionality-Set screw for Picatinny rail mounting-IPX7 waterproof rating-Battery door opens with quarter-turn-Requires CR2016 battery (included)-Primary LED-Low-output LED-White/red LED-10 year storage lifespan-24 hour burn time-10 lumen output Other Features: Torch back up light white/red led power button has one click low second click high, hold for 2 seconds for primary light