The EOTech HHS V features an EXPS3-4 with a G45 magnifier combination creates the perfect solution for close-quarter combat situations as well as 600 yard targets. Instant transition is achieved through a switch-to-side mount that offers a simple and quick disengagement of the magnifier. The HHS V is a durable night vision-compatible system that offers wide field optical performance for visibility in extreme low-light conditions. FeaturesTwenty daylight brightness setting 1,000 continuous hour battery lifeFog resistant internal opticsNight-vision compatibleDurable Switch-to-side mounting system IncludesHHS V (EXPS3-4 & G45.STS)Quick-start guideWarranty and registration cardCR123 batteryProtective case