J58TA-DF 8X32 Binocular Laser Rangefinder | 2500m IP67 Waterproof | Precision Distance Angle Measurer for Hunting/Golf/OutdoorParameters of this Laser Rangefinder Binoculars: J58TA DF J58YA DF tolerance Optics Magnification(X) 8 10 5% Objective lens diameter (mm) 32 42 0. 5mm Eyepiece diameter (mm) 22 22 0. 5mm Exit pupil diameter (mm) 4 4. 2 10% Exit pupil distance (mm) 19. 3 18. 8 +5 to 0. 5mm Launch aperture(mm) 10 10 5% Receiving aperture(mm) 32 42 0. 5mm Field of view () 6 4 5% 1000 meters visible range (m) 105 70 5% Close focus distance (m) 3. 5 7 5% Laser divergence