1. Wireless slave function, convenient and quick. 2. Contains three anti-skid pads to prevent the phone from falling. 3. Plus hard scratch-resistant glass, the screen clear, clear light without blocking line of sight. 4. Can be rotated 360 degrees, the base contains viscose, with high-strength bonding effect, tear when leaving no trace, you can use in the uneven area. 5. HUD mode: Open the map, set the line and click HUD mode, rotate the phone screen click on the projection, start the HUD navigation.