SIG SAUER ROMEOZero 1x 24mm Auto Off Reflex Red Dot Sight Black 3 MOA. The sight features a ruggedized WeaponsGrade textured polymer body with a new aspherical glass lens that drastically increases scratch resistance while eliminating optical distortion. In addition to the upgraded lens this optic can be configured by the user to run a 16-hour Auto-Off or a Constant-On setting. Auto-Off requires the user to manually turn the optic on after timing out at the 16-hour limit while Constant-On requires the user to manually turn the sight on and off at their discretion. The ROMEOZero Auto-Off enables rapid target acquisition in an everyday carry package at an iron sight price. Specifications for SIG SAUER ROMEOZero 1x24mm Auto Off Reflex Red Dot Sight: Manufacturer: SIG SAUER Color: Black Magnification: 1 x Objective Lens Diameter: 24 mm Reticle: 3 MOA Dot Illumination Type: LED Illumination Color: Red Brightness Settings: 8 Emitter Type: Open Parallax: Free Battery Type: CR1632 Battery Quantity: 1 Battery Life: 20000 hours Length: 1.6 in Width: 0.9 in Height: 0.9 in Base/Mount Type: Top Rail Mount Features of SIG SAUER ROMEOZero 1x24mm Auto Off Reflex Red Dot Sight New User-Selectable 16-hour Auto-Off and Constant-On modes WeaponsGrade Ultralite Polymer Housing Optimized for Everyday Concealed Carry on Modern Micro Compact Pistols Stippling Design Inspired by Pattern from P365 Platform 8 User-Configurable Brightness Settings Parallax freeHigh-Efficiency Point Source LED Emitter Package Contents: SIG SAUER ROMEOZero 1x24mm Auto Off Reflex Red Dot Sight SIG SAUER Infinite Guarantee SIG SAUER SOR01331: ROMEOZero AUTO OFF Reflex Red Dot Sight Black 3 MOA