Check the listing for details. Trijicon RMR HD Red Dot Sight RMHD2-C-3200002. Color: Black, Condition: New. Listed at 645.00 USD. Features:Top-loading battery - Battery changes are easy, with no need to dismount the optic; Uses common CR2032 battery with up to 3 years of battery life.Upgraded windage and elevation adjusters - More tactile and audible clicks for tool-less zeroing.Rugged, durable construction - 7075-T6 forged aluminum housing; waterproof up to 66 ft. (20 m).Large, unobstructed field of view - Find the reticle with ease; parallax free.Reliability for everyday carry - Unique shape diverts impact force to protect lens from drops and bumps.Complete user control illumination settings - Nine brightness settings with multiple modes for excellent visibility in any lighting condition. Clear target visibility - Advanced lens technology provides crisp field of view.Identical footprint as RMR - Mounts easily on popular red-dot-ready pistols using the same base as Trijicon RMR®.Improved controls - More tactile and audible controls provide positive feedback when used with duty gloves.Index ridge alignment aid - Unique housing design provides built-in index point for fast sight picture acquisition even from atypical positions.Button lock-out mode - Secures the Auto-Brightness Setting which is Ideal for Everyday CarryManual brightness lock-in mode - Secures the User-Chosen Brightness Setting IndefinitelyBrightness response setting - Choose amongst Normal Auto (default), High Auto, and Low Auto adjust settingsForward mounted light sensor - Enables the RMR HD Automatic Brightness mode to read the lighting conditions at the target, rather than just at the user.Specifications:Length x Width x Height: 2.15 in x 1.27 in x 1.19 in(54.61mm x 32.26mm x 30.23mm)Weight: 1.69 oz. (47.91g)Magnification: 1xReticle Pattern: 3.25 MOA dot with 55 MOA Selectable ReticleDay Reticle Color: RedNight Reticle Color: RedIllumination Source: LEDIllumination Settings: 9 brightness settings, 3 NV, 1 super brightPower Source: CR2032Battery Life: Over 3 years of continuous use in brightness setting 5, dot onlyAdjustment: 1 MOA per clickAdjustment Range: 135 MOA Total TravelEye Relief: Infinite in.Housing Material: 7075-T6 aluminumSubmersion Depth: 65 ft. (20m)Operating Temperature: -40F to 140F (-40c to 60c)Includes:1ea CR2032 Battery1ea T10 Torx Key2ea #6-32 x1/2" Torx Head Screw2ea #6-32 x .380" Torx Head Screw1ea Manual1ea Warranty Card1ea Trijicon Sticker