Go sky 10x42 HD Professional Binoculars for Bird Watching Travel Stargazing Hunting Concert The Go sky 10X42 compact roof prism binocular, equipped with FMC(fully multi-coated) green film lens and clear prism, 10X power and solid construction, is a good gadget which enable you to observe target in distant world with more true-to-life details. 1）Compact roof prism model balance small size and premium image quality. The 10X power magnification and 307ft/1000yds wide field of view is perfect for outdoor activities such as climbing, hiking, driving, watching wildlife and scenery. It uses 42mm Fully multi-layer coatings green film objective lens and 18mm blue film eyepiece, which guarantee the key elements of an optical device, make your view brighter, clearer and deliver crisp images. 2） Solid construction -- Its durable magnesium framework and rubber armor make it usable to withstand the toughest weather conditions. 3）Use with or without glasses - Adjustable eye-cups twists up and down for comfortable viewing with or without eyeglasses. 5) Comes with a Go sky 2017 newest quick alignment smartphone mount. Compatible with smartphone X, 8p, 8, 7p, 7, 6, 6s, 6plus, 5, 5s, Samsung GALAXY S6, S6 Edge, S5 , Note, LG, HTV, Sony, Etc. 6）1/4"-20 threads on the front, you can connect it to a tripod with a binocular adapter. 7) Compact and light weight, easy to carry outside. Item Dimension: 5. 51"x 6. 30"x 2. 17”. Weight: 23. 88oz. Specification: Magnification: 10X Objective lens diameter: 42mm Prism Type: BAK 4, Roof Eye Cups Type: Twist-up Focus System: Center Field of view: 102m@1000m Exit Pupil: 4mm Exit Relief: 13. 6mm Lens coating: Fully multi-coated(FMC) You will receive: 1 x Binocular 10x42 1 x smartphone adapter 1 x Carrying Case 1 x Neck Strap 1 x Cleaning Cloth 2 x Lens Cover 1 x User Manual