Feature a BDC Reticle for Precision: VOW-10BDC Second Focal Plane Reticle Compensates for Bullet Drop and Windage up to 650 Yards a Crisp, Wide Image: Fully Multi-Coated Lens with Edge-to-Edge Clarity and Excellent Field of View a Optimized for Small Game Hunting: 4-16x Ideal for .22LR, .25, .30; Side Focus from 10 Yards for Close-Range Shooting a Reliable Zero Retention: 1/4 MOA Zero Reset Turrets with Lock Function Prevent Accidental Adjustments a Lightweight 1" Tube Build: Compact 25.4mm Monotube Made of 6061-T6 Aluminum for Portability and Durability Relations Reticle Specification A Magnification: 4-16x A Objective Lens Dia.: 44mm A Ocular Lens Dia.: 38mm / 1.5 inch A Ocular Lens Length: 60mm / 2.4 inch A Exit Pupil: 11-2.7mm A Optics Coating: Fully-multi coat A Field of View: 21.1-5.3 feet@100 yds A Eye Relief: 105--100mm / 4.1-3.9 inch A Length: 340mm / 13.4 inch A Weight: 625g / 22.0 ounce A Tube Dia.: 25.4mm 1" Monotube A Click Value: 1/4 MOA A Elevation Range: 50MOA A Windage Range: 50MOA A Parallax Setting: 10 yards to infinite A Reticle: VOW-10BDC A Illumination: None A BDC & ranging Reticle usage set at 10x power, big game, 22LR Rimfire and varmint rifles max to 600 yards range A Distance between objective lens part and middle turret: 59mm (2.3 inch) A Length of middle turret part: 37mm (1.5 inch) A Distance between middle turret part to power ring: 57mm (2.2 inch) A Side focus marks: 10, 15, 25, 50, 100, 200, 500 and infinite yds A Shock tested to 750g and water proof A Fully nitrogen purged to eliminate any fogging of the lenses internally A High quality 6061 T6 aircraft grade aluminum A Diopter compensation from fast-focus eyepiece (+2 to -2) A Accessories included: weaver rings (default) or dovetail rings, flip-up caps, sunshade and cleaning cloth etc. Compatible Gun Type For Close-Range Shooting: Glock Series (G17 / G19 / G43X), SIG P320 / P365 XL, Canik TP9 / Mete Pro, Beretta / FN / S&W / Taurus, CZ Shadow 2 / CZ75, Ruger American 9mm / Mark II / 1911, Barra, Spring Air Gun, etc. For Small Game Hunting: FX Impact (.22 / .25 / .30), Walther / HW40, Ruger 10/22 (.22LR), Barra / HW, CZ 457 (.22LR), Tikka T1x (.22LR), etc.