describe: Optical telescope lens 12x zoom without vignetting with tripod monocular mobile phone camera for smartphones slow mobile phone Optical telescope lens 12x zoom without vignetting monocular mobile phone camera with tripod describe: Specification: Project Type: Telescope (Flexible) Material: Acrylic, ABS Dimensions: (approx.) Length: 88mm/inch (non-elastic), stretchable 15mm/inch Small lens diameter: 15mm/inch; Large lens diameter: 21mm/inch (excluding lens edge) Actual expansion: 8/12 times Lens diameter: 25mm/inch Exit distance: 2.2mm Outlet diameter: 11mm Field of view: 70 degrees Compatible with: all mobile phones and tablets, including iPhone Samsung Sony HTC etc. Specification: feature: (1) The telescope has 8x/12x zoom, which can adjust the focus very well. (2) The telescope can be used as a single pair of glasses. (3) Suitable for most types of mobile phones, including cased phones and mobile phones. (4) The mobile phone has a rear camera and can be connected to the telescope through a clip. (5) It can improve the image quality of mobile phones. (6) Suitable for watching games, concerts, sightseeing, observing animal lovers, long-distance shooting reporters, etc. (7) Photograph private detectives in physical science, geological exploration, forest management, railway port planning, etc. (8) Products include: telephoto lens, clip, cleaning cloth. Package contents: 1 piece telephoto lens