Ade Advanced Optics RD2-006-2 Red Dot Sights 8 Kinds of Reticle 5 adjustable brightness settings. Quick detach pica tinny/weaver mount. 1MOA; Low power consumption for long battery life Quick detach mounting system. Aluminum Body with metal protective shield Unlimited eye relief. Water-resistant and shockproof. Parallax corrected. Wide field of view. Dimension:108x53x62mm Compatible with magnifiers or NVGs. Clocking Wind age/Elevation adjustments Equipped with Rechargeable Battery. The battery holds around 120+ hours per charge when constantly on. The Battery is also remove able for easy replacement