The Romeo8T is designed for modern MSR platforms and shotguns. It comes standard with solid lens covers and 1/2 hex bolt mount. Users can select from 4 different integrated reticle options (Dot Circle-Dot Dot with Holds Circle-Dot with Holds) The 100 000 + hour battery life is from the readily available CR123 battery is side loading for quick battery replacement. Unlimited eye relief to acquire aiming point and target regardless of eye position behind sight. MOTAC (Motion Activated Illumination) powers up or down when sensing motion. Uses an ultra-efficient red LED illumination for daylight visibility and extended run time. 1.535″ optic mount height. Removable Titanium Shroud for ultimate optic protection from drops and bumps. Waterproof IPX-8 rated and fog-proof.