Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight 3 MOA Red Dot + 28 MOA Circle Black. Using powerful LED emitters that reflect a bright reticle onto a specially coated lens aiming becomes as easy as point-and-shoot. This enclosed ACRO red dot is engineered to meet the challenges of real-world tactical situations while maintaining a confident sight picture. Get the enclosed red dot your gun needs without breaking the bank. Specifications for Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight: Manufacturer: Gideon Optics Color: Black Fabric/Material: 7075-T6 Aircraft Grade Aluminum Magnification: 1 x Objective Window Size: 21.4x18.8 mm Reticle: Circle-Dot Illumination Type: LED Illumination Color: Red Brightness Settings: 10 Eye Relief: Unlimited Adjustment Click Value: 1 MOA Emitter Type: Enclosed Lens Material: Glass Battery Type: CR2032 Battery Life: 50000 hours Water Resistance Level: IPX-7 Shockproof: Yes Fogproof: Yes Length: 47.1 mm Width: 30.4 mm Height: 35.2 mm Weight: 3.25 oz Lens Finish: Multi-Coated Red Dot Sights-Footprint: Aim Point Acro Base/Mount Type: Top Mount Features of Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight Closed-Emitter Excellence Redesigned Built to be a worthy successor to our popular Mediator Death Toaster closed reflex sight the Mediator II ACRO sight gives you the performance youre used to in a reimagined design tailored for tactical performance. Uses an Aimpoint ACRO-type footprint for mounting to compatible slides adapter plates or the included 1913 Picatinny Mount. 7075-T6 aircraft-grade aluminum enclosed housing gives you a tough-as-nails chassis to protect your emitter and 21.4mm X 18.8mm multi-coated lenses. Ten adjustable brightness levels (eight daytime and two night-vision-compatible) for a 38/3 MOA circle-dot multi-reticle thats tailored to meet your accuracy needs and environmental conditions. Fogproof IPX-7 waterproof and shockproof to 2100Gs of force. 90 MOA total adjustable windage and elevation range (45 MOA each). Shake-to-awake power-saving mode turns off the reticle after 225 seconds of inactivity to extend the life of your CR-2032 3V Lithium-Ion battery for up to 50000 hours. It turns back on in milliseconds with the slightest movement for rapid-reaction shooting. The top-load battery compartment doesnt require the removal or re-zeroing of the optic. Parallax-free to 33 yds. with unlimited eye relief. Measures 47.1mm X 30.4mm X 35.2mm and weighs just 3 oz. Backed by our unsurpassed lifetime warranty against defects. If your optic fails for any reason short of misuse or intentional abuse contact our support team for a replacement Package Contents: Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight Picatinny Riser Mount Cleaning Cloth Manual T10 and Windage/Elevation Adjustment Tools Gideon Optics MD20RD: Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight 3 MOA Red Dot + 28 MOA Circle Black