With 400 lumens of vibrant white light, our WML Series is constant, momentary and strobe. Extensively tested for emitters provide up to 1.5 hours of runtime in white mode, or 4 hours in infrared mode. MIL-STD-810G certified, this 3-ounce weapon light's concentrated, high-intensity beam fills your field of view for close to mid-range target identification. With just a flip of the lever, instantaneously switch between white or infrared mode. In addition, the easy-to-operate lockout system ensures the light isn't activated until you're ready. Our all-inclusive rail clamping design integrates seamlessly with your weapon, providing simple, fast mounting with no need for additional tools.FUNCTIONS: Constant / Momentary / StrobeMODES: White / InfraredOUTPUT: 400 Lumens (white mode) 100mW (IR)RUNTIME: High efficiency emitter provides up to 1 1/2 hours (white) / 4 hrs (infrared)WEIGHT: 3oz/85.048g with batterySIZE: Length: 4.1 in. / 10.414 cm Bezel Diameter: 1 in. / 2.54 cmMOUNT: Integrated MIL-STD-1913/NAR rail. No tools required.ACTIVATION: Ergonomic contoured design for easy on/off.LOCKOUT: SYSTEMS Safety lever / Head RotationCONSTRUCTION: Reinforced polymer body offers high impact resistance and durability. Patented heat dissipating vents for improved LED thermal management.WATERPROOF: Up to 66 feetBATTERIES: 1 Lithium 123A included, head removes for battery replacement.