Features: 1. It can be controlled by remote control to realize the volume control of the power on and off 2. Full-frequency speaker PU edge, silver-black diaphragm 40 magnetic 4 ohm 3W, cost-effective, clear sound quality 3. Interface 3.7-5V DC power supply to automatically play music, stereo amplifier, support Bluetooth, support power-off memory, U disk to play music 4. The acrylic shell is made of 6 pieces of 3mm high-transparency acrylic spliced together. Exquisite and beautiful, you need to tear off the brown protective film before splicing 5. Very suitable for welding contact and DIY production teaching training Parameter: Channel output: 2 channels Output power: 3w/3w Power supply voltage: DC 4.2-5V, if the voltage exceeds 5V, the module will be damaged Rated current: 1.5A-2A Wiring instructions: the white terminal is connected to the speaker and the red terminal is connected to the power supply Bluetooth operation: Turn on the Bluetooth of the mobile phone, you can scan the device directly, find the /quot;XC 046 Click to connect. After disconnecting the bluetooth, it will automatically switch to the USB flash drive. Circuit function: The red terminal of the bluetooth module is 5V power supply, the white terminal is the left and right channels of the speaker, the red wire is positive /, and the black is negative -. With the sound of music or other sounds, the LED lights will move with the rhythm of the sound (the speed of the sound and the size of the sound. After the