The telescope has 8 times zoom, which can adjust the focal length well.The telescope can be used as a monocular.Fit most kinds of mobile phones.Phone has back camera, can be connected to the telescope through the clip.Mobile phone& 39;s quality of imaging can be improved evidently.Applicable to watch the game, concerts, tourism, observe animal lovers, news reporter, long-distance shooting, etc.Type: Phone TelescopeMaterial: Optical Lens, ABSQuantity: 1 SetActual Magnification: 8XObjective Lens Diameter: 25mm/0.98" (Approx.)Exit Pupil Diameter: 2.5mm/0.10" (Approx.)Exit Pupil Distance: 11mm/0.43" (Approx.)Length: 10cm/3.94" (Approx.)Height: 3.1cm/1.22" (Approx.)Field of View: 6.2Focusing Mode: Central Focus, Right Eye Fine TuningCompatible with: for iPhone, Samsung, Sony, HTC, etcNotes:Please use it care, because lens are adjusted accurately, if it drops or hit, the field of vision maybe not matched and picture will deflect.Please don& 39;t drop into water. If it drops into water, please repair it quickly.Please don& 39;t look at the sun absolutely, your eyes may be ache and blind sometimes.Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Phone Telescope1 x Clip1 x Cleaning Cloth1 x Cloth Pouch