USCAMEL 8x42 Binoculars Compact, Waterproof and Dustproof, for Birdwatching and Outdoors Hunting, Black (10x42) Central Focus roller: Users only need to turn the telescope in the middle circular wheel, you can change the focal length Right eyepiece diopter adjustment knob: there may be differences between the left and right eye vision. 42MM large objective lens, high light transmittance, clear and bright image, no color difference, outstanding glimmer effect High quality all-glass optics - objective and ocular lenses. Multi-coated ultra-clear film FMC broadband,bright color transparent, high transmittance, no color difference Materials: Magnesium chassis + rubber armoring Magnification: 10x Caliber: 42mm Prism System: Roof Prism Glass: BAK4 Focus System: Center + Right Eyepiece Field Of View: 101 m /1000 m Eye Cups : Twist up Coating: FMC Color: Black Weight: 650g Size: 475*335*22mm Waterproof: Yes USCAMEL has been the industry leader in high-performance sports optics for more than 10 years. The company&#039;s guiding principle is to provide the highest quality, most reliable sports optics products and most excellent on the market. USCAMEL product lines enhance the enjoyment of every outdoor pursuit, including nature study, hunting, fishing, birding, and stargazing. Indoors, the company&#039;s monoculars/binoculars bring the audience closer to the action in fast-moving sports or the fine arts at theaters and concerts. 1 x Binocular 1 x Lens Cloth 1 x Lanyard 1 x Carrying Bag