The holder is well designed ，when you not use it you can fold it， it's almost as big as a mouse.Very convenient to open it， only need press the button. it can hold the screen 4-6.5 inch，fit most phone.360 degree rotation， easy to adjust to any viewing angle.Use the Viscosity silicone ， this make it stick more fastness， quick removal and installation of automotive glass and adsorbed on the dashboard.Brand New and High quality mouse phone holder from Vivi2016Product FeaturesSize (LWH): 3.74 inches， 2.2 inches， 4.33 inchesWeight: 7.04 ouncesProduct Description●Easy to use with one key to open， when you don't use it you can fold it looks like a mouse both the size and appearance.●It can hold the phone screen from 4 inch to 6.5 inch.It uses the ABS and viscosity silicone make it stick more fastness and you can change the angle freely.●Automatic deformation with just one click，advanced automatic open for arm phone holder.One-side arm clamp can be mounted any device's width within 56-90 mm.Pad on arm will protect your device from scratch.●Can be adhere to car dashboard and windshield.Also a great stand on desk holder for watching TV at home ect.Specifications: Material: ABS + Hardware 360 degree rotation One Touch System For Convenient Use Firmly Silicone Sucker Base With Lock Catch To Prevent Devices Falling Packing: color box packaging cove MEAS: 45 * 36.5 * 31.3cmPackage Included: 1 x Car Phone Holder 1 x User Manual