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COSTIN Ultimate HD 8-24x50 Durable Zoom Binoculars with Porro Prism Powerful Adults Telescope for Hunting Bird Watching Wildlife Stargazing Observing Sport Events and Hiking - BlackContent: 1X Sports Optical Lens Binoculars 1X Carrying case 1X Neck strap 1X Paracord bracelet 1X Microfiber cleaning cloth 1X User MunualSpecification: Magnification: 8X-24X 5%Objective lens diamete: Φ50 1mmType of prism: PorroField of view: 8X4°26″//24X2°16″Exit pupil diameter: 8X6.25//24X2.08Relative brightness: 8X39.06//24X4.33Pupil distance: 8X19.05//24X15.4Near focus distance: 8mInterpupillary distance adjustment: 58-72mmLength: 175mmWidth: 190mmNet Weight: 900g After Sales: We do take full responsibility for our COSTIN OPTICS Branded products. Should you encounter any difficulties with our gears feel free to contact us immediately. We will assist you to the best of our knowledge. The COSTIN USPTO serial: 87615036 - is a registered trademark protected by US Trademark Law. All products supplied by COSTIN are exclusively manufactured by COSTIN.