Magnification x Diameter(mm):  8X21    Lens coating: Blue     Field angle: 7°     Field of view(at 1000m/1000yds): 122m/366ft     Prism glass: BK-7     Close focus(m): 5     Exit pupil(mm): 2.6     Eye-relief(mm): 10.5     Waterproof/fog proof: NO     Adapt to tripod: NO     Prism system: Roof     Focus system: Center     Eyecups: Fold down     Dimension(mm): 91x38x31     Weight(g): 75