There is a music device that can be plugged into the cigarette lighter of a car, called car MP3.

Car MP3 is transmitted wirelessly to the car FM stereo radio equipment. You only need to set the frequency of the car radio to the frequency of the car MP3, or let the radio search for the frequency to play.

Car MP3 is also called an audio converter, a car MP3 wireless transmitter or an MP3 car audio companion, etc. It can be used with an ordinary MP3 player to form a car MP3 audio system. It is an emerging car audio product in the 21st century. Currently, there are many common similar car MP3 devices.

Extended information:

Car MP3 types

1. MP3 players with built-in transmitter modules. This type of MP3 players have an FM transmitter integrated inside. device. The main advantage of this product is its high level of integration. As long as you have one such MP3 player, it can realize the car function. However, the transmitter module is integrated inside the product, so it consumes more power.

2. Separate FM transmitter module, this is a separate FM transmitter. Its advantage is that it transmits better signals. You don’t have to worry about the matching of the MP3 product itself. You can choose your favorite MP3 to match it. The disadvantage is that the cost of buying them separately will be much higher, and there are only a few fixed frequency bands for transmission.

Baidu Encyclopedia-Car MP3