Red 2 MOA Dot Shake Awake/Motion Deactivated Standby Up to 50,000 Hours of battery life IPX7 waterproof Side Mounted Battery Parallax Free 8 Daytime Settings/2 Night vision Settings Cyelee T3 red dot sight is based on an already-proven design: the Bushnell TRS-25. It is more compact and rugged than Bushnell TRS-25. And T3 Red Dot Sight is equipped with auto on off feature and easier to operate. Featuring a crisp 2 MOA red dot reticle, waterproof housing with shockproof internals. And Provides 2 base mounting options - Low Profile and Absolute Co-witness. Perfect for duty and home defense!