10×50 BAK4 HD Night Vision Rangefinder Optical coating FMC Binoculars WithCompass
Eyepiece diameter 23.5mm. Objective lens diameter 50mm. Exit pupil diameter 7mm. Prism system Paul type BAK4 prism. Waterproof function nitrogen waterproofing. Optical coating FMC enhanced membrane. Mirror body material metal + green rubber. Eye cup type fold goggles. Near focus distance of about 4 meters. Exit pupil distance 15mm. Product standard telescope objective lens cover… Read more 10×50 BAK4 HD Night Vision Rangefinder Optical coating FMC Binoculars WithCompass