... and ergonomic thumb depressions for comfortable, long-term viewing, waterproof, fogproof, nitroge Binger 10x42 water proof binoculars:Perfect balance ... and ergonomic thumb depressions for comfortable, long-term viewing, waterproof, fogproof, nitrogen filled, BAK-4 prism. Near foucs ... from 2m to infinity. Binger 10X42 waterproof binoculars: Item No.HL1042Model:10X42Exit pupil:4.2mmEye relief ...