The 10x42 Embark Binocular by Barska is a tough binocular system that has been designed to handle the elements while delivering premium viewing clarity. A non-slip rubber armor coating provides protection to the internal optics from shock and impact, while the high-quality multicoated lenses bring the user an exceptionally clear view. The compact roof prism design of the 10x42 Embark Binoculars lend themselves well to carrying along in a backpack or with you on a hike. These Embark Binoculars come nitrogen purged and O-ring sealed for complete waterproof/fog proof protection. 10x Magnification, 42mm Objective Lens Multicoated Optics BAK-4 Prisms, Large Center Focus Knob Waterproof 1.5m/3min Shock-Absorbing Rubber Armor, Non-Slip Textured Grip 10x Magnification, 42mm Objective Lens Multicoated Optics BAK-4 Prisms, Large Center Focus Knob Waterproof 1.5m/3min Shock-Absorbing Rubber Armor, Non-Slip Textured Grip 10x Magnification, 42mm Objective Lens Multicoated Optics BAK-4 Prisms, Large Center Focus Knob Waterproof 1.5m/3min Shock-Absorbing Rubber Armor, Non-Slip Textured Grip