SIG SAUER ROMEO X Mount:R1P R2 and all DeltaPoint Pro and radio options and radio options 5 hours on High Construction and Durability Durable anodized machined aluminum construction for long term reliability Controls and Features Interchangeable ambidextrous rear paddle switches for user preference Supports momentary and constant on operation Safe off feature helps prevent accidental activation and conserve battery life Mounting System Rail clamp allows fast tool free attachment and removal Designed for safe installation without placing hands in front of the muzzle Fits select Smith and Wesson Beretta Springfield Armory and Heckler and Koch 1913 subcompact handguns Power and Included Items Multi fuel design accepts CR123A battery or SL B9 rechargeable battery pack Includes CR123A battery mounting kit with keys high and low switches and multi tool Designed to enhance visibility and targeting capability in home defense and tactical situations Inspired by MIL SPEC ROMEO M17 CNC Machined 7075 Aluminum Housing Patent Pending Beryllium Copper Flexure Arm Distortion Free Aspherical Lens Open Emitter 10mm Rated MOTAC (Motion Activated Illumination) Circle Dot With Individually Selectable 2 MOA Dot & 32 MOA Circle Low Deck Height for Standard Height Iron Sight Co Witness 20 Country of origin: US