Only one metal plate is used, but the main unit is unused! Included: Main unit 2 metal plates 1 double-sided tape Main advantages in the car: 1. Easy installation on air conditioning vents or dashboards: You can flexibly choose the installation location regardless of the vehicle model. 2. Safe visibility: The compact design does not obstruct the view, ensuring safety even when using navigation. 3. 360-degree angle adjustment: Can be freely switched vertically or horizontally, ensuring optimal visibility depending on the driving situation. Simply attach the included metal plate to the back of your smartphone. This is the perfect in-car accessory for navigation and hands-free calls while driving.