The HE507C-GR is an open reflex optical sight designed for pistol applications. Features include Holosun’s Green Super LED with up to 50k hours battery life, Multi-Reticle System, Solar Failsafe, and Shake Awake. - MRS: Circle Dot - 2MOA Dot - 32 MOA Circle - Super Green LED - Up to 50,000 Hours Battery Life - 12 Brightness Settings - (2 of them for Night Vision Compatible) - Convenient Tray Battery Compartment - Parallax-free & Unlimited Eye Relief  INCLUDED IN BOX: - User Manual - Lens Cloth - T10l Key - CR1632 Battery