Feature A Feather-Light Design: Only 12.4g (0.44oz) with 16x22mm Window, Among the Lightest Pistol Red Dots on the Market A Smart Illumination: Built-In Light Sensor Automatically Adjusts Brightness to Match Ambient Light A Rugged & Ready: Reinforced Engineering Polymer Housing Built to Withstand Real Firearm Recoil A Reliable in All Conditions: 50,000-Hour Runtime, IPX4 Water Resistance, and Weaver Mount Included A Effortless Mounting: MGT Footprint, Compatible with RMSc and SMS, for GlockA(R) 43X/48 MOS, CanikA(R) TP9, WaltherA(R) PPS, etc. Video Specification Magnification: N/AWindow Lens Size: 16x22mm / 0.6x0.9"Length: 40.8mm / 1.6"Width: 25.4mm / 1.0"Height: 23mm / 0.9"Weight (net, without base mount): 12.4g / 0.44ozEye Relief: FreeOptics Coating: Multi CoatedParallax: Free (45MOADot Size: 3MOADot Intensity: AutomaticFootprint: MGT (RMSc)Working Temperature: -20~+55CHousing Material: PolymerMount Material: Aluminum 6061-T6Battery Type: CR2032Runtime: 50,000 hoursFinish: FDEMounting: WeaverFor close-in work and general shootingIPX4 water resistant, shock proof to 1000gWeaver mount made of aluminum alloy 6061 T6 in durable black matte finish>20,000 hours battery runtimeDesigned for real fire arms and handgunsPackage includes: retail package, weaver mount, rubber lens cover, hex keys and cleaning cloth etc