USED TruGlo Crossbow Red-Dot Sight 30mm 3 Dot Black. The 30MM TRADTIONAL offers unlimited eye-relief a wide field of few and a compact design that are not available in magnified optics. Specifications for TruGlo Crossbow Red-Dot Sight 30mm 3 Dot: Manufacturer: TruGlo Magnification: 1 x Objective Lens Diameter: 30 mm Color: Camo Black Reticle: Multi-Dot Finish: Matte Tube Diameter: 30 mm Illumination Color: Red Mount Type: Picatinny Emitter Type: Enclosed Objective Window Size: 30 mm Battery Quantity: 1 Brightness Settings: 11 Attachment Type: Picatinny Battery Type: CR2032 Features of TruGlo Crossbow Red-Dot Sight 30mm 3 Dot Descending Diameter Dots reticle for multi-distance shooting (smaller dot for longer shots) Unlimited eye relief Wide field of view Flip-up lens caps / lanyard system Lightweight compact design Easy to mount Integrated Weaver-style mounting system Battery included (TG988C 3V-CR2032) Package Contents: TruGlo Crossbow Red-Dot Sight 30mm 3 Dot TruGlo TG-TG8030B3: Crossbow Red-Dot Sight 30mm 3 Dot Black