Features:1. Support 4-color spectrum display.2. Support Bluetooth Bluetooth version 5.0 and hands-free calling.3. Support AUX, FM, USB, SD.4. Support MP3/WMA/WAV/FLAC/APE format music.5. Support Bluetooth Bluetoot on a song, next song, volume adjustment, play / pause, mute.6. Support power-off memory function: the song and volume played before the memory is powered off can be memorized to the current point.7. Support USB/SD card/Bluetooth/FM/switch.8. Turn on the default Bluetooth, if you have a card or a USB flash drive, put music directly.Specification:Bluetooth: Bluetooth 5.0Music format: MP3/WMA/WAV/FLAC/APEVoltage: DC 5V / 12VWorking current: 600MA-800MARemote control battery: CR2025 button batteryOpening: approx. 83 * 20 * 31mm / 3.3 * 0.8 * 1.2inMounting hole spacing: approx. 92mm / 3.6 inPanel size: approx. 107 * 25 * 31mm / 4.2 * 1.0 * 1.2inWeight: approx. 70gPackage list:1 * Decoder Board1 * Remote Control2 * Cables2 * Screw Plugs