Bluetooth 5.0 chip: Bluetooth 5.0, support 24bit/192kHz sound transmission, faster and more stable transmission speed, low power consumption. Supports multiple audio modes: MP3, FLAC, WAV, WMA, APE.Hands-Free Calling: Support Bluetooth hands-free phone calls via the built-in microphone. Just press the button to answer calls. Convenient to use and let you drive safely. The middle button can switch USB and Bluetooth mode. Memory function: 87.5/95.0/108.0 FM channels, the car Bluetooth FM transmitter allows you to enjoy music on your phone while driving and use a louder and clearer navigation voice to car stereo from your phone. Music, volume and frequency will return to pre-stop mode. music on your phone to enjoy music on car stereo. Easy to use. Support USB flash drive and card reader to play the song.Magnetic LED Display: The magnetic base can stick to any metal surfaces, and the 90cm long wire allows the FM transmitter to be placed freely. Universal use in various vehicles with 12-24V DC input voltage. Can be used in most cars, trucks, off-road vehicles, etc.