Wind River Olympic binoculars are not only small and lightweight they're tough, waterproof and wilderness ready. The phase coated, roof prism, center focus binoculars also feature fully multi-coated lenses for brightness and clarity. Rain shed, twist-up eyecups for comfortable use with glasses. Armored exterior for extra ruggedness. 53538 WIND RIVER 8X25 COMPACTField of view in feet @ 100yards: 27.3', Weight: 14.8 oz., Length: 4.9", Eye Relief: 16.5mm.