magnification:parallax free 1x                

eye relief:unlimited  

dot size:3MOA center dot and 20MOA circle  

Objective lens size:30mm          

Rail type:Fits onto Weaver and M1913 Picatinny bases  

Center height:28mm    

Overrall length:142mm(6inch)  

weight:6.08oz  

power source:one CR1620 Lithium cell(included)  

battery life:200hours(with light intensity set at 3)