There is no on/off switch on a red dot, but due to light sensor, the single battery will be enough for up to 45 working days.
Adjustable windage and elevation
Multi-coated front lens.
Easily installed on any 20 mm Picatinny rail.
Objective diameter: 32 mm
Magnification: ACOG - 4X , Micro Red Dot - 1X
Eye relief: 1.5"
Combined Weight: 460g
Note: Battery not included