Designed with bluetooth-compatible hands-free call, it can bring a convenient and safe call for you. It can play the song which playing before the power off since it has memory function. It is made of good quality material, durable to use. After the car frequency is adjusted to the same as the MP3 frequency, you can insert the U disk and play music immediately. Say goodbye to the annoyance of FM radio advertising, a mobile phone has thousands of music apps to listen to the sound you want to hear. It supports mainstream MP3, WMA, APE, FLAC, WAV and other lossless audio formats and provides lossless sound quality to your driving experience. The length of this product is 8cm, the width is 5cm and the height is 4.5cm. After the wireless bluetooth-compatible connection is successful, the real-time voice of the mobile APP map navigation will be played from the car stereo and instantly become your personal car navigation assistant. Plug the player into the car cigarette igniter, the players screen will be lit, and the startup status will be displayed. The battery voltage will be displayed for three seconds and reminded whether the voltage is normal. At the same time, it will enter automatic playback. It has over-power protection, over-heat protection and anti-leakage protection. It is suitable for most cars. It is compatible with various electronic products such as mobile phones, tablets, bluetooth-compatible headsets, MP3 players, etc. Single or two charging at the same time. Item Name: FM Transmitter Material: ABS,Metal Compatible Models: Universal, Suitable Phone: for Apple/for Android Output Current: 3.4A(MAX) Bluetooth Version: 4.0 Music Format: MP3, WMA, APE, FLAC, WAV Bluetooth Transmission Distance: