Powers up when it senses motion and powers down when it does not. Provides for optimum operational safety and enhanced battery life. Come with 1913 mount and QD mount.The item "ROMEO3 1x25 Mini Reflex Sight 3 MOA Dot Reticle Red Dot Sight Scope Picatinny" is in sale since Wednesday, March 25, 2020. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser Scopes". The seller is "your*beststore" and is located in HK. This item can be shipped worldwide.