50,000 HOURS BATTERY LIFE. MINIATURIZED TO FIT POCKET CARRY PISTOLS. LOCKING FUNCTION AND MOTION SENSOR. Please note this does not fit the RMR mount.It is a smaller sight. Not same size as the HS507c. The item "Holosun HS507K-X2 Red Dot Reflex Sight for Pistol 2MOA DOT 32MOA CIRCLE" is in sale since Tuesday, December 1, 2020. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser Scopes". The seller is "gunsandsilver" and is located in Kennewick, Washington. This item can be shipped to United States.