The clever indicator is a bit of an exaggeration, but it’s a really spectacular thing nonetheless.

Doosl DSER107 Universal Wireless FM Transmitter - $ 7,93

The question is, what good is an FM transmitter? Well, with the help of such a gadget, any audio signal can be transmitted to the car's hi-fi system. By definition, it uses an FM frequency band, so we can capture it with an FM-AM radio. The stuff is put into operation as follows:

1. Turn on the device, and then connect it to the smartphone through the jack.
2. The buttons next to the digital display search for a “clean” frequency band (which the transmitter can store anyway) where the external stations interfere as little as possible.
3. In the second step, we set the car radio to the station you found, and the house party can begin!

The end result of the above operation is, of course, that the music (or the calls!) Started on the smartphone are played on the car's sound system. The Doosl DSER107 is a more wooden bench, so it is very cheap, but unfortunately it does not come with a remote control. In our opinion, this is not such a big cut, but the 300 mAh battery is also worth mentioning, which guarantees 10 hours of availability.