Water resistant. Impact resistant. Weight: 4.1oz. CREE XPL LED. Instant Activation: Tap-on/Tap-off. Modes: High (420 lumens, 1h 5m runtime), Low (110 lumens, 1h 50m runtime). Fits most pistols, rifles, and shotguns with M1913 Picatinny (or similar) accessory rail measuring at least 1” from recoil lug to trigger guard. Requires (1) CR123A battery (included). Aluminum construction. Color: Black. Clam packed.