GFRD-10C red dot sight scope in Tan color

GFRD-10C red dot sight scope in Tan color
Magnification: 1.0x
Tubeless Sight Window Lens Size: 22x33mm
Overall length: 82mm (3.2 inch)
Mount base length:57mm (2.2 inch)
Width (without illumination knob): 36mm (1.4 inch)
Height: 48mm (1.9 inch)
Stepless green and red illumination adjustment
Weight (net): 160g (5.6 ounce)
Eye Relief: Free, excellent for moving target and raid shot
Parallax: 1 MOA at 80 yards
Field of View (M @ 100M): 15.8
Optics Coating: Multi Coated
Reticle: Four types of reticles; Reticle exchange with audible click
Feature 1 M.O.A (50 Yards) windage and elevation
Elevation Range: ± 30MOA
Windage Range: ± 30MOA
Shock proof, Rain Proof and Fog Proof
High quality aluminum alloy in durable black matte finish
With reticle lock feature
Integrated 21mm weaver mount
To change battery:
Use coin to loosen the cap
Take out the used battery
Exchange with 1 new pc of CR2032 button battery
fasten the cap again
Free Fitting involved: Gift package, two hex keys and cleaning cloth