Overview: 1. Smart dual chip and pure copper coil make phone holder more safety and upgrade 70% faster. 2. Pure electric, easy to face various road conditions 3. Powerful capacitor, can endure without electricity, after stopping the engine, it can still open and close normally 4-5 times. 4. One-handed operation, convenient and easy to pick and place. 5. Dashboard type and air vent type can be choosed, can be use for multiple scene.