The Holosun Carry Enclosed Pistol Sight w/Multiple Reticle System is a compact enclosed pistol sight designed for a concealed carry firearm. These Red Dot Sights feature 2 MOA dots & 32 MOA Circles inside 7075 T6 aluminum housings. The Holosun Carry Enclosed Pistol Sight w/Multiple Reticle System also has Holosun's lowest deck height, facilitating use with standard height iron sights on many pistol models Specifications for Holosun Carry Enclosed Pistol Sight w/Multiple Reticle System: Manufacturer: Holosun Color: Black Finish: Anodize Fabric/Material: 7075-T6 Aluminum Magnification: 1 x Objective Lens Diameter: 0.58 - 0.77 in Illumination Type: LED Brightness Settings: 8 Eye Relief: Unlimited Adjustment Type: MOA Adjustment Click Value: 1.5 MOA Emitter Type: Enclosed Lens Material: Glass Battery Type: CR1620 Battery Quantity: 1 Battery Life: 50000 hours Operating Temperature: -40 - 70 Celsius Water Resistance Level: IPX-8 Length: 1.1 in Width: 1 in Height: 1.6 in Weight: 1 oz Additional Features: w/Multiple Reticle System Included Accessories: Standard Condition: New Package Type: Box Quantity: 1 Switch Type: Button Features of Holosun Carry Enclosed Pistol Sight w/Multiple Reticle System: Up to 50,000 Hours Battery Life Parallax-free & Unlimited Eye Relief Aspherical Glass Lens with Zero Distortion Shake Awake Technology with Last Setting Recall IPX8 Certified Waterproof Holosun K series footprint Package Contents: Holosun Carry Enclosed Pistol Sight w/Multiple Reticle System (x1) CR1620 Battery Adapter Plate (RMSc to Holosun K.) Multi Tool Lens Cloth User Manual