Bluetooth version: 5.0 Supported Bluetooth protocols: AVRCP, HFP, A2DP Frequency range: 87.6-107.9 MHz The LED screen displays: frequency, number of the track being played, etc. Power supply: 12V / 24V Output voltages for Power Delivery port: 5V / 3A, 9V / 2A, 12V / 1.5A Output voltages for the USB port (Quick Charge 3.0): 5V / 3A, 9V / 2A, 12V /...

4 Strong magnets - keep the device stable. 2 metal plates of different shapes, covered with adhesive,  that can be attached to the phone, hidden under a case or a flap. Universal - fits any device: Phone, GPS, Tablet, etc. Easy to assemble. Weight: 60g Diameter: 4.5 cm  Length: 3.5 cm