Feature:1. Portable Zoom Telescope: 100x22 folding binocular, pocket portable zoom telescope, this lens magnification is 10 times, the objective lens diameter is 21mm / 0.8in.2. Foldable Design: The foldable binoculars are transferred to the telephoto lens of the phone, and after assembly with the phone adapter (not included), the telescope is transferred to the HD telephoto lens of the phone.3. Wide Applicability: It is compatible with all smart phones for X, 8, 7, 6, 6S, Plus 5, for galaxy S8, S7, S6, for and so on.4. Fully Coated Optical Elements: Fully coated optical elements ensure excellent light transmittance and brightness. One hand operation, small and light, with wrist strap, easy to carry. Comes with a portable storage bag, can be fixed on the belt, very convenient5. Shockproof and Durable: Shockproof and durable binoculars with a rugged frame coated with shock absorbing, non slip rubber armour ensure that your monoculars still deliver better performance in all temperatures and weather conditions.Specification:Item Type: Folding BinocularsWeight: Approx.219g / 7.7ozMaterial: RubberObjective Lens Diameter: Approx.21mm / 0.8inRelative Brightness: 7.1Perspective: 7.3°Vision: Approx.131m / 143.3yd, Approx.1000m / 1093.6ydExit Pupil: Approx.2.7mm / 0.1inLens Coating: Full CoatingLens Structure: 2x5E/4GMagnification: 10X