National Geographic 7x50 Porro Binoculars These elegant Porro-prism binoculars have excellent optical characteristics. The fully coated optics guarantee a decisively higher light transmission through the glass, thus increasing color fidelity and contrast. Diopter compensation is standard with these models. This makes these binoculars suitable for beginner birders or nature observers. Even on windy days, due to the 7x magnification, a stable image is provided. The 50-mm objective lenses gather enough brightness for observation even in twilight conditions. A carrying pouch and neck strap are included.For longer observations, a tripod-adapter thread is integrated. Specifications � Magnification: 7x � Objektice Diameter: 50mm � Field of View : 122/1000m � Optical Sytsem: Porro Optics � Coating : Fully coated � Dimensions: 195x178x62 mm � Weight: 770g Scope of delivery � Binoculars � Bag � Lens cloth �Magnification: 7 X �Objective Diameter: 50 mm �Field of View: 122/1000m �Optical Sytsem: Porro �Optical Coating: Fully Coated �Dimensions: 195x178x62mm �Weight: 770g