12×42 High-Power Adult Binoculars with BAK4 Prism, FMC Lens
12×42 High-Power Adult Binoculars with BAK4 Prism, FMC Lens, Waterproof & Fogproof, Ideal for Bird Watching, Travel, Stargazing, Hunting, Concerts (Including Carry Bag) Adjusting the feld of view Pupillary Distance which is the distance between the centers of the pupils in each eye varies from different people. To achieve perfect alignment of the eyes and the fens openings, hold the binoculars in the normal viewing position and move the two barrels either apart or closer to each other until you have a single,clear field of view. Focusing 1.Set tho right eyepiece (A)to zero and sight on a distant subject. 2.Cover...