Nikon 25x Eyepiece Specifications: Magnification(X): 25 Angular Field of view (Real / Degree): 2.0 Angular Field of View (Apparent / Degree): 47.2 Field of View at 1,000m (approx): 35 Exit Pupil: 3.3 Relative brightness: 10.9 Eye Relief (mm): 18.0 Weight (g): 130 Price: £81.00 Quantity: