Barska Gladiator Reverse 10x42mm Porro Prism Binoculars Black Small. The Reverse Porro Prism design creates a more compact over-all size compared to traditional porro prism binoculars but maintaining full-size features such as the large 50mm objective lenses. The zoom lever allows you to seamlessly transition through the magnification range from 10x for quickly scanning large open areas all the way to 30x to get a closer more detailed look at your object of interest. The oversized Center Focus Knob is ergonomically positioned for fast and easy focusing while maintaining a natural and comfortable hold. Fully Coated Lenses on all air-to-glass surfaces increase light transmission for a bright crisp image. The Rubber Armor Exterior provides an added layer of protection with a textured surface for a non-slip grip. Fold-down rubber eyecups are incorporated into each eyepiece providing a comfortable viewing experience with or without eyeglasses. Included with these binoculars are lens covers a neck strap and a nylon case for convenient and secure transport. Specifications for Barska Gladiator Reverse 10x42mm Porro Prism Binoculars: Manufacturer: Barska Color: Black Magnification: 10 x Objective Lens Diameter: 42 mm Prism System: Porro Weight: 23.3 oz Features of Barska Gladiator Reverse 10x42mm Porro Prism Binoculars 10-30x Magnification 50mm Objective Lenses Reverse Porro Prism Design Fully Coated Optics BK-7 Prisms Fold-down Rubber Eyecups Large Center Focus Knob Shock-Absorbing Rubber Armor Package Contents: Barska Gladiator Reverse 10x42mm Porro Prism Binoculars Carrying Case Lens Covers Neck Strap Barska AB13372: Gladiator Reverse 10x42mm Porro Prism Binoculars Black Small