Pentax 9X28 DCF-LV Binocular Durable, lightweight compact body design High-resolution phase-coated and super-reflective coated roof prisms provide high resolution, high contrast images Waterproof and nitrogen filled  allows submersion up to 3.3 feet Helicoid eyepiece rings offer comfortable eye relief, 5.6 Angle of View Fully-coated lenses increase light transmission and color quality