The telescope has 18 times zoom, which can adjust the focal length well.The telescope can be used as a monocular.Fit most kinds of mobile phones, include flip phones and bar phones,Phone has back camera, can be connected to the telescope through the clip. Mobile phone's quality of imaging can be improved evidently.Applicable to watch the game, concerts, tourism, observe animal lovers, s reporter long-distance shooting etc.Private detective taking pictures forensics, geological exploration, forestry management, railway port scheduling and etc. 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't drop into water. If it drops into water, please repair it quickly.Please don't look at the sun absolutely, your eyes may be ache and blind sometimes.Actual Magnification: 18X Camera / Cell Phone Holder:This unique adapter / holder adds a screw hole to the mobile phone.It allows you to attach your phone to a monopod or tripod for better quality picture.It supports mobile phone with width from 2.17inch(5.5cm) ~ 3.35inch(8.5cm) Complete flexibility, made of hard plastic and aluminum;The link attachment screws into most digital camera sizes and is removeable;1/4 standard thread interface;Removable link attachment with lock release button ; Type: Phone Telescope Material: ABS Color:Black Package contents: 1* 18 times telephoto lens 1* dedicated fixed phone clip 1* silicone eye mask 1* PJ103 bracket + pull clip 1* wipe cloth Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.