Bayonet mount with lock for easy attachment and release
Fully multilayer-coated
Waterproof up to 2m for 10 min., and fog-free — thanks to O-rings and nitrogen gas (body-and-eyepiece joint is water-resistant)
Compact digital camera COOLPIX series can be attached to eyepiece of FEP series (except FEP-20-60) with Digital Camera Bracket FSB series

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    Eye Relief (mm) 25.4
    Weight (g) 390
    Magnification x (Fieldscope 85) 30
    Magnification x (Fieldscope 65) 24
    Real field of view (degree) (Fieldscope 85) 2.4
    Real field of view (degree) (Fieldscope 65) 3
    Apparent field of view (degree) 64.3
    Field of view at 1,000m*1 (m) (Fieldscope 85) 42
    Field of view at 1,000m*1 (m) (Fieldscope 65) 52
    Exit pupil (mm) (Fieldscope 85) 2.8
    Exit pupil (mm) (Fieldscope 65) 2.7
    Relative brightness (Fieldscope 85) 7.8
    Relative brightness (Fieldscope 65) 7.3
    Outer diameter x length (mm) 63x81