National Geographic - 8X21 Binocular - Black & Yellow At only 170g, these water-resistant, rubber-armoured binoculars are ideal for tossing in your backpack wherever you travel. Individually focusing eyepieces with BAK-4 roof prisms and multicoated lenses increase contrast and resolution and bring birds and wildlife eight times closer Features: - Magnification - 8x - Objective diameter - 21mm - Optical System: Roof - Field of view 128-1000m - Prism type: Roof Specifications: - Dimensions: 10 x 9.5 x 3.5cm - Weight: 170g - Warranty: 2 Year warranty What's in the box x 1 National Geographic - 8X21 Binocular - Black & Yellow