Specification :

" System: Magnifying Module
" Magnification: 3X
" Eye relief :at 5¡ã FOV 40 ¨C 90 mm at full FOV 60 ¨C 65 mm
" Weight: 200g
" Length: 110mm(4.3")
" Width/height: 44x41 mm (1.7" x 1.6")
" Objective Lens Diameter: 30mm
" Ring width: 30 mm
" Surface finish: Anodized aluminum, dark grey, rubber covered black
" US military style
" Water Proof and Shock Proof
" Brand New in Box