Universal mobile phone MP3 MP4 player GPS holder featuring an extra secure suction system. The frameless mount can be used for most smartphones and other devices with a maximum width of 83 mm.Featuring a special lock knob designed suck out all the air between the surface and the suction cup. This creates a vacuum and provides greater security for your device.Adjustable mounting system to hold your device securely in place.360° rotary mount holder which is supported by the ball joint design.