Check the listing for details. Olight Osight 3 MOA Rechargeable Green Dot Open Reflex Sight with Charging Cover. Color: Black, Condition: New. Listed at 209.99 USD. FeaturesIndustry's First Magnetic Charging Cover: Osight introduces a pioneering magnetic charging cover featuring a battery display that reveals the precise battery levels for both the cover and the optic, making uncertainty certain. (70,000+ hours runtime on lowest mode, 17+ days on the brightest mode, extended to 70+ days with the charging cover.)3 MOA in Large Window: Boasting a 0.94 x 0.85-inch lens, this optic ensures precise targeting even amidst recoil. The 3 MOA dot stands out clearly for quick and accurate dot acquisition.Unwavering Zero: Following a rigorous 10,000-round field test, Osight maintains zero calibration successfully, never lose your accuracy.Motion & Light Sensor: Turns off automatically after 10 minutes of inactivity, wakes it up in an instant. The auto-sensing mode chooses the best brightness for you, with 10 daylight levels and 2 night levels in manual mode and lockout mode, catering comprehensively to all usage scenarios.Most Common Footprint: By adopting the most common industry-standard mounting footprint (Ruggedized Miniature Reflex, 407c/507c footprint) for optic cuts, Osight ensures versatility and ease of integration. * Torque specification: 17 in-lbs per screw. (It's recommended to ensure optimal performance by tightening each screw to a torque of 17 in-lbs as per specifications.)