Surefire Weaponlight Pistol 1000 Lumens Total Internal Reflection Lens Black Cam-slotted bezel and rear locking lugs on battery housing interface with MASTERFIRE holster for secure weapon retention Total Internal Reflection (TIR) lens creates far-reaching, high intensity beam with ample surrounding light Integral ambidextrous momentary- and constant-on switching Attaches securely to both Universal and Picatinny accessory rails O-ring and gasket sealed; weatherproof Accepts optional pressure-activated DG switches for precision control without altering grip on weapon WARNING: California`s Proposition 65 Specifications for SureFire Masterfire XH30 Ultra-High Dual-Output Holster Weapon Light, 1000 Lumens, White LED: Color: Black Beam Color: White Light Output: 1000 lumens Battery Type: 123A Bulb Type: LED Included Accessories: XH30 Weapon Light Additional Features: XH30 locks into Masterfire Rapid Deploy Holster, Ambidextrous push/toggle, 1000/300 lumen modes Fabric/Material: Aluminum Weight: 4.8 oz Attachment/Mount Type: Universal, Picatinny Length: 3.7 in Beam Distance: 213 m Battery Life: 1.25 - 2.5 hours Finish: Mil-spec Hard Anodized Bezel Diameter: 1.25 in