The Holosun SCS (Solar Charging Sight) offers a breakthrough in electro-optic technology by integrating a solar panel and rechargeable battery for continuous power. Featuring a 20,000-hour power reserve, this optic can run indefinitely under regular light exposure, eliminating battery replacements. The SCS includes an intensity override mode and low-power alert. Built from durable 7075 T6 aluminum with a waterproof IP68 rating, it directly mounts on Sig Sauer P320 models and offers a green Multi-Reticle System. At 1.35 oz, it s lightweight with a 0.58" x 0.77" viewing window. Holosun Item Number: SCS-320-GR Pistol Mounted Optic Reticle Color: Green Multi Reticle System (2 MOA Dot, 32 MOA Circle) Direct Mount to Sig Sauer P320 Handguns Internal Rechargeable Battery Unlimited Battery Life Solar Failsafe Technology for Backup Power Source Auto Adjusting Brightness Control with Override Function 1 MOA Adjustment per Click, +/- 30 MOA Adjustment Range Multilayer Reflective Glass Coatings 7075 T6 Aluminum Housing Waterproof Rating: IP68 Window Size: 0.58" x 0.77" Dimensions: 2" x 1.05" x 0.95" Weight: 1.35 oz Anodized Flat Dark Earth Finish Fits: Optics Ready Sig Sauer P320 Pistols, Pistols with DeltaPoint Pro Pattern Optics Cut Includes: Mounting Screws, Multi Tool