Small and exquisite, easy to carry foldable design.The metal structure is robust and durable, and is specifically designed for outdoor activities.FMC green film with clear images with high contrast.Optical coating, light transmittance of about 99.5%.Life waterproof, easy to use.Double-sided broadband coating having high transmittance and a u que target in the spectral range from 400 nm to 680 nm with an average transmission of over 99.5% lens.Specifications: Conditions: 100% brandProject type: TelescopeMaterial: PlasticColor: BlackModel: 8X21Mag fication: 8xCaliber:21mm Field of view: 7 °Field of view: 131m / 1000mPrism system: spinalFocus type: medium FocusOutlet diameter: 2.6 mmOutlet distance: close to 11.0 mm Focal Length: 2.13 moptical coating: the objective lens, the FMC green sheet, ocular,