This riflescope has overall diameter of the objective bell 18mm.

• Crystal Clear Prism Scope With FMC Prism Offers Distortion Free and Edge-to Edge Image,

• 2.65in 67.5mm Long Eye Relief, 7.4° F.O.V Wider Than Most Other Similar Prism Scopes,

• 10 Levels Illumination Very Bright & Very Dim (Fit Night Vision), 1MOA Adjustment,

• Compact CQB Prism Optics 77mm 3.0in Length Featuring .223 5.56x45mm Cartridge

• 1MOA Center Dot w/ Ring Illuminated Reticle Optimize the Ultra Fast Shooting Performance

• IP67 Waterproof (30min, 1 meter water) Built By Heavy Duty Rugged Aluminum Housing

• It is really a MUST for your fast target acquisition in close to medium range shooting

• Magnification: 3x
• Objective Lens: 18mm
• Exit Pupil: 6mm
• Optical Coating: Fully multi coated
• Field of View: 7.4°
• Field of View: 12.9m @ 100 meters
• Field of View: 38.8ft @ 100 yards
• Eye Relief: 67.5mm / 2.65in
• Click Value: 1 MOA
• Elevation Range: >40MOA
• Windage Range: >40MOA
• Height: 36mm (1.41in) from bottom to center
• Length: 77mm / 3.0in
• Weight (net): 223g / 7.9oz without mount
• Reticle: VEPS-MBR etched glass
• Parallax Setting: 100 yards
• Finish: Black matte
• Illumination: 10 levels red
• Battery Type: CR2032
• Shock proof and fog proof (nitrogen filled)
• High quality aluminum alloy in durable black matte finish
• Fast focus eyepiece at ocular lens adjustment -2 to 2
• Integrated mount for 21mm picatinny rail
• Accessories: riser section, plastic adjustment wrench, hex keys, honeycomb sunshade and cleaning cloth etc

The prismatic scope's 3x magnification and fully multi-coated optics provide bright and clear images, while its durable construction and waterproof design make it ideal for use in rugged outdoor environments. This micro prism sight is also lightweight and easy to carry, making it a convenient addition to any outdoor gear kit.