Features:
*Extral Low Dispersion (ED) Glass 
*Bak4 Prism
*Dual Speed Focusing 1:10 Fine Focus 
*Waterproof (Nitrogen Filled)
*Fully Multi Coated 

Type	straight eyepiece (90°)
Waterproof	yes
Objective Lens Diameter	80mm
Eyepiece	E0824Z-A
Magnification	20 ~ 60x
Lens Coating	Fully Multi-coating
Field of View (degrees)	1.5° ~ 1.1°
Field of View at 1000yds	78.5ft ~ 57.6ft @ 1000yd
Eye Relief (mm)	25~16
Near Focus  (ft)	21
Interchangeable eyepeice	yes