High Quality BCA Branded Red Dot Sight. Switch between a Red or Green Reticle depending on your preference to greatly improve accuracy and performance. For any situation, this sight fits on any 20mm Mount Rails and comes with lens covers. No matter the occasion, this Bear Creek Arsenal Red Dot sight is the right choice. Adjustment Type: 1/4" Clicks Red Dot Size: 4 MOA Field of View: 60 Mount Rail Diameter: 20 mm Lens Covers Included: Yes Red Dot/Green Dot Reticle Type: Mil-Dot Type: RIFLE Illuminated Type: Red and Green with 5 level brightness adjustment Magnification: 1 X Field Of View(@100yds): 60 degree Tube Diameter: 40mm Objective Diameter: 35mm Eye Relief: Flexible Exit Pupil Diameter: 80mm Length: 120mm Height: 3.03inch Weight: 475g Package Includes: 1 X Cleaning Cloth 1 X Instruction Manual *Battery not included* Battery Type: 3 V/CR2032