Features: Wide Field of View - Binoculars are 26mm in diameter and the objective lens is 50mm in diameter; when you use these binoculars, the field of view is wide open and the gain for binoculars is very clear. Professional powerful binoculars--Multi-layer coated lens elements provide excellent light transmission and minimal distortion, better image brightness, contrast and quality.Bak-4 prisms have a perfectly round exit pupil. Provides bright, clear and sharp viewing. Sleek and Rugged - Everyday waterproof body with rubber coated finish, shock resistant, firm and comfortable grip, outdoor durability, easy to carry, even for harsh environments. But please do not immerse the telescope in water. EASY ADJUSTMENT - The center focusing knob of this compact binocular ensures fast and high-precision focusing. It can also focus on different distances with the right eyepiece ring. Versatile Use- These binoculars are designed for bird watching, hiking, hunting, climbing, traveling, soccer basketball or any sporting events, concerts. It is also an ideal Christmas gift for adults, kids, and children. Tip: These binoculars have low light night vision and can be used at night, but not in total darkness. Specification: Eyepiece diameter: 26mm Objective lens diameter: 50mm Prism material: BAK4 Size: 20.3 * 14.5cm/8 * 5.7inch Color: Black Note: Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. Package Included: 1* 20X50 Binoculars