Hello, I am using the previous unit in the car. Since it has to be supplied with 5 volts, it can be supplied via USB. To do this, cut the cable and solder it to a USB cable. Caution! The device could break and you will almost certainly lose the warranty! Furthermore, it is not clear whether this device must also be operated with 5 volts. Everything worked fine for me...

Works perfectly in the car!!! Unfortunately, it comes with a 2-pin plug, so to power it in the car you have to get a USB 2.0 connection cable with the same size plug. PS: The connection cable needs 5W to operate the Logitech Bluetooth device!

Philipp, do you know if such a cable with USB connection is available for purchase?