Condition: 100% Brand New Item Type: MP3 Decoder Board Material: ABS Optional Color: Black, Silver Speaker Power: 3W*2 Speaker Impedance: 4 Ohms Power Supply: 5V or 3.7V Lithium Battery Battery of Remote Control: CR2025 FM Mode: Use the mode key to switch the machine to fm state(the default state is fm when no usb /sd card is turned on); Last Song: Short press from high to low to search the radio, long press to reduce the volume; Play/Pause: Short press to change to the next stored station, long press 3 seconds to perform automatic search and save station; Next Song: Short press low to high for radio, long press up for volume. Line Mode: Press mode on the panel to switch the machine to line state. The audio source is input by Line/DC, and the volume is controlled by an external audio source device. The volume can also be adjusted by the previous song and the next song.The adjustment method is also the same as the MP3 volume adjustment. Clock Adjustment: Press the "MODE" on the panel to switch the machine to the clock state, press the play/pause key to select the time or minute, and then the selected part flashes, and then press the previous one or the next one to adjust the time (Note: the time should be adjusted again after starting up each time).1With a display screen, the operation can be clearly seen. 2Support FM radio function, U disk play and memory card play. 3Equipped with power amplifier, it can be connected with 3W*2 speakers. 4Both modes are supported, FM mode and Line mode. 5Clock adjustment fuction is also supported.1. Please allow 1?3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.1x MP3 Decoder Board2x Cable1xRemote Control(including batteries)