Crimson Trace's CMR-208 Rail Master is a high performance weapon light with an unbeatable price. It features a 420 lumen high output and a 110 lumen low output, a momentary function, and a strobe function to disorient targets. The CMR-208 Rail Master can be instantly activated with tap-on/tap-off controls, and can be attached to any firearm with a picatinny rail. Features: Instant Activation: Tap-On / Tap-Off420 (high) or 110 (low) Lumen LED white lightHigh output Cree XPL LEDMaterial: Anodized AluminumWaterproof up to 1 meterImpact resistance up to 1 meterModes: high, low, strobe, momentaryBattery life: 1 hr 5 min 420 Lumens / 1 hr 50 min 110 Lumens Crimson Trace CMR-208 Rail Master Universal 420Lu Tactical Light 01-8240-1