The Sig Sauer ROMEO8T is a closed red dot sight with 100,000+ hour battery life with a 38mm objective lens available in either black (Model #SOR81002) or FDE (Flat Dark Earth - Model #SOR81003). Designed specifically for modern sporting rifle platforms and shotguns, this optic comes standard with solid lens covers and 1/2 hex bolt mount. Four ballistic circle-dot reticle options include Dot, Circle-Dot, Dot with Holds, and Circle-Dot with Holds. It has a massive battery life at 100,000+ hours and the readily available CR123A battery is side loading for quick battery replacement without removing from your firearm. Sig Sauer's MOTAC (Motion Activated Illumination) powers up or down when sensing motion. Unlimited eye relief to acquire aiming point and target, regardless of eye position behind sight. Uses an ultra-efficient red LED illumination for daylight visibility and extended runtime. Is mounted at 1.535" height. Made of lightweight and extremely strong aircraft-grade 7075-T6 aluminum housing. The Sig Sauer ROMEO8T closed red dot is waterproof, IPX-8 rated, and fog-proof. Comes equipped with a removable Titanium Shroud for ultimate optic protection from drops and bumps.