Introduction to basic functions of the product *Support Bt (5.1) handsfree call, Bt music playback *Support three-band radio storage FM1-FM2-FM3, 18 stations can be preset. (RF: 87.5-108MHz) *Support large capacity SD Card , USB flash disk and other memory playback; *Front and rear aux audio input, which can play audio such as mobile phone, MP3 / MP4 / MP5 / navigation in the car through the machine; *4 channel output, experience immersive experience * volume knob control, *Shutdown time display function; *12V voltage high power 4 * 60W output power; 12-24V voltage 4 * 35W output power; *One key mute. There is one key mute button on the remote control and the machine, which is convenient for occasions; *Support mp3 / wma / WAV high fidelity audio format, download songs at a bit rate of more than 320kbs, and double the sound effect; *Vehicle gauge LCD display technology, bright display, soft gloss and no dazzling; *Power off memory function, which can remember the playing state of radio or music when power is off; *Isolation of front and rear / left and right channels; *A variety of EQ sound scene choices: jazz, rock, pop, classical, etc; *Adjust the left and right front and rear tones to easily enjoy the Hi-Fi car audio-visual effect *DC 12V power supply, optional 12-24V general voltage *Multiple circuit protection test (overload, overvoltage, short circuit)