Binoculars for bird watching and Nature 10x42ED ED Bak4 W/P and F/proof
 
 
Extra-Low Dispersion ED Glass reduces chromatic aberration which causes color fringing and produces a cleaner and brighter image;
Large field of view; 42mm objective lens provides a field of view at 394ft/1000yards;
IPX7 waterproof through nitrogen-filled internals to handle the most extreme weather conditions; ensuring you can watch uninterrupted views;
Premium coatings provide a high light transmittance across the entire visible light spectrum; guarantee a bright; sharp image even in twilight conditions by maximizing transmission of fading light;
High-quality Magnesium alloy body allows a long term use;
Large central focusing wheel for easy focusing; easy to operate; just turn the focusing knob to get clear and sharp images;
Diopter adjustment; eyepiece built-in diopter adjustment lens; can adjust the visual balance of both eyes; easy to observe the target.