AimPoint 2OA CompM3 Sight Innovative sight offers highest standard available for sight systems technology; Advanced Circuit Efficiency Technology (ACET) provides battery life of up to five years Compatible with any generation of Aimpoint's night vision devices; comes with replaceable outer black rubber cover, which protects it from scratching and improves stealth Unlimited field of view and optimal light transmission; parallax-free with unlimited eye relief; no harmful laser emissions ACET technology allows 50,000 hours of operation on single battery, or 500,000 hours of use on NVD setting; submersible to 150 feet Includes limited manufacturer's warranties of two years for professional or competitive use, and ten years for personal or recreational use