SPECS: Housing/Hood – 6061 T6 aluminum, anodized, matte black. Polycarbonate battery compartment. 5½” (14cm) long, 2-7⁄8" (7.3cm) wide, 23⁄8" (6cm) high. 15.8 oz. (448g) weight. Lens - 3⁄16" thick, 3-layer, shatterproof laminate glass. Reticle size: 1 MOA dot and 65 MOA ring. Laser – Visible Class IIIa pointer, 5mW power output, 635nm wavelength. 8mm beam diameter at 25m. Maximum laser range approximately 33 yards (30m) in daylight, 492 yards (450m) in low light. Uses two AA 1.5 volt alkaline, lithium, or rechargeable batteries.