TRUGLO Power-Dot Red Dot Bow Sight SteadyDot Technology improves accuracy and allows more accurate groupings. Optics and mounting bracket designed specifically for archery. Precision, micro-adjust bracket. Vertical adjustment accommodates virtually all bows. TRUTOUCH soft-feel technical coating. Adjustable with one hand. Removable quiver mount. Glow-in-the-dark yardage tape. Water-resistant / shock-resistant. Unlimited eye relief. Aperture has .875" inner diameter. Anti-reflection coating on target side. Precise aiming dot for fast target acquisition. Wide field of view. Multi-coated lens. CNC machined. Adjustable for left and right handed shooters. Battery included (3V-CR2032).