1X30 1x32 Green Red Dot Sight Scope Holographic 11mm & 20mm Weaver Rail Mount for Tactical Hunting Optics Mount Shooting

Explanation:
11 brightness adjustment red dot sight
Sturdy metal construction
Multi-optic lens
Brightness, wind direction and precise elevation settings
Integrated mounting for 20mm and 11mm rails
Magnification:1x
Objective lens diameter (mm):30
Exit pupil distance (mm):30
Vision @ 100 yards:68
Optimal vision (inches): unlimited
Parallax setting:50yards!
Size: as shown
Weight:210g
Power supply: CR2032 battery (not included)