Bushnell H2O 10x42mm Porro WP/FP Binocular Twist Up Eyecups Box 6L Dark Blue. These Binoculars from the pros at Bushnell feature multi-coated optics with BaK-4 prism glass to deliver crystal clear views. Waterproof and fogproof the Bushnell H2O Porro Binocular can withstand any conditions that mother nature can dish out. For a 100percent waterproof viewing experience look no further than the Bushnell H2O 10x42mm Porro WP/FP Binocular. With a comfortable 16mm eye relief twist up/twist down face cup and a large center-focus knob this is one pair of binoculars that will cast a wide net for those looking to gain a superior perspective on all that is going on around them. For an O-ring sealed and nitrogen purged performance look no further than the Bushnell H2O 10x42mm Porro Waterproof/Fogproof Binocular. Specifications for Bushnell H2O 10x42mm Porro Prism WP/FP Binocular: Manufacturer: Bushnell Color: Dark Blue Magnification: 10 x Objective Lens Diameter: 42 mm Prism System: Porro Prism Material: BAK-4 Eye Relief: 16 mm Exit Pupil: 4.2 mm Field of View Linear: 114 m at 1000 m Optical Coating: Multi-Coated Binoculars Focus System: Center Focus Close Focus: 4.6 m Water Resistance Level: Waterproof Length: 5.6 in Weight: 27 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 10x42mm Porro WP/FP Binocular Bushnell 134211R: H2O 10x42mm Porro WP/FP Binocular Twist Up Eyecups Box 6L Dark Blue