Maximized window size for quick target acquisition IPX7 waterprooof, +P+ recoil rated 50,000 hour battery life with shake-to-wake technology The C&H Comp is a rugged, large windowed pistol optic that will be perfect for your next competition. It was built for those that want a larger window on their competition, duty, or carry gun. It utilizes the same footprint as the RMR to ensure widespread compatibility.