Baseus Solar Car Wireless MP3 Player CDMP000001 - Wireless solar FM transmitter for your car. The solar panel attaches it to the windshield and starts automatically due to vibrations in the vehicle. All you have to do is pair it via Bluetooth 5.0 with your phone, set the desired frequency on your car radio and play your favorite songs from your phone even in your old car radio. It also allows hands-free calling. It is magnetically attached to the solar panel and can be easily removed. On the body you will find a 3.5 mm jack, a microSD card slot and a large USB for connecting to your music sources. The USB-C connector is used for charging and operation when the sun isn't shining enough.