IRON JIA'S Tactical Holographic Micro T-1 1X24 Red & Green Dot Scope Riflescope Black with Riser Mount Rifle Hunting Durable all metal construction Weather and shock proof Quick Release Holographic Reflex Dot Sight Interchangeable high profile quick release rail mount and low profile mount Lightweight, dust-poof, weatherproof, and shockproof Fits standard 20mm Picatinny or Weaver rails. Adjust windage and elevation with two knobs , knobs covered by alloy caps to protect its accuracy and durability Power supplied by one pcs of CR2032 battery Dimensions: Length: 2.55&#034; / 65mm Width: 1.57&#034; / 40mm Height: 1.77&#034; / 45mm (<span class="a-text-bold">with low profile mount</span>) 2.75&#034;/ 70mm (<span class="a-text-bold">with high profile mount</span>) Weight: 117g (4.15 oz) with low profile mount 177g (6.25 oz) with high profile mount Obj. Aperture:22 mm Magnification:1x Field of View:50 degrees Eye Relief:Unlimited Reticle Type:5 MOA Finish:Black Matte