Leapers UTG 4.2" ITA Red/Green CQB Dot with QD Mount, Riser Adaptor Md: SCPDS3840W Features: • Great Field of View and Unlimited Eye Relief • Clear and Sharp 4.0 MOA Dot Sight • No-Reflection High Tech Emerald Coatings • Red or Green Dot Adapts to Any Environmental Background • Optimal Height Design to Co-witness with Iron Sights • Includes Both Smart Adaptor & Straight-up Quick Detachable Tactical Mount with Innovative Quick Detach Mounting Deck to Use on Any Picatinny Rail • Illumination Rheostat with Variable Brightness Levels Offers Stealthy and Infinitely Fine Adjustment • Aim and Instant Lock On Target to Enhance Shooting Accuracy and Performance • Most Versatile Dot Sight for Wide Range of Pistols, Shotguns & Rifles Specifications: - Magnification: 1X - Tube Diameter: 38mm - Objective Diameter: 32.5mm - Field of View @ 100 yards: 100' - Eye Relief: Flexible - Exit Pupil: 26mm - Click Value @100 yards: 1/2" - Length: 108mm - Weight: 7.1 oz - Parallax Setting: Infinity - Batteries: CR1620 3V Manufacturer: Leapers Model Number: SCPDS3840W UPC: 4712274527171