Bushnell H2O 8x42mm Porro WP/FP Binocular Dark Blue. Folding Roof Prism design provides a more compact binocular for ease of use and convenient storage. Specifications for Bushnell H2O 8x42mm Porro Prism WP/FP Binocular: Manufacturer: Bushnell Color: Dark Blue Magnification: 8 x Objective Lens Diameter: 42 mm Prism System: Porro Prism Material: BAK-4 Eye Relief: 17 mm Exit Pupil: 5.2 mm Field of View Linear: 136 m at 1000 m Optical Coating: Multi-Coated Binoculars Focus System: Center Focus Close Focus: 5.5 m Water Resistance Level: Waterproof Length: 5.5 in Weight: 27.2 oz Magnification Type: Fixed Fogproof: Yes Features BaK-4 prisms for bright clear crisp viewing Multi-coated optics for superior light transmission 100percent waterproof: O-ring sealed and nitrogen purged for reliable fog-free performance Non-slip rubber armor absorbs shock while providing a firm grip Twist-up eyecups Large center-focus knob for easy adjustments Longer eye relief Package Contents: Bushnell H2O 8x42mm Porro Prism WP/FP Binocular Bushnell 134218R: H2O 8x42mm Porro WP/FP Binocular Dark Blue