Product features: Climp adjustable width range: 60mm-95mm, adjustable thickness up to 50ml 2:360 rotation, easy adjustment for opticker viewing. 3. Extra-firm goose neck absorbs vibration, providing a stable viewing environment 4. Easy to install, no tools required. 5. Suitable for mobile phone/GPS/PAD/MP4 Operational Instructions: 1. Attach the bracket to the footrest 2. Open the lock knob, make the telescopic extend vertically to the max range, then clip it on the rearview mirror and lock it. 3. Press the button to open the bracket clamp arms, put your device in the holder and grip it. Telescopic