Product Features: 1. Remote control operation enables power on/off and volume adjustment 2. Full-range speaker with PU surround, silver-black cone, 40mm magnet, 4/ 3W – excellent value with clear sound quality 3. 3.7-5V DC power supply interface compatible with automatic music playback; stereo amplifier with Bluetooth support, power-off memory function, and USB drive playback 4. Acrylic housing assembled from six 3mm high-transparency acrylic panels. Exquisitely crafted; remove brown protective film before assembly. 5. Ideal compatible with soldering practice and DIY educational training. Product Specifications: Channel Output: 2-channel Output Power: 3W / 3W Supply Voltage: DC 4.2-5V 5V maximum; exceeding this will damage the module Rated Current: 1.5A-2A Wiring Instructions: Connect white terminal to speaker; red terminal to power supply. Bluetooth Operation: Enable mobile Bluetooth, scan compatible with devices, locate ‘XC046’ and connect. Upon disconnecting Bluetooth, it automatically switches to USB drive mode. Circuit Function: The red terminal of the Bluetooth module supplies 5V power, while the white terminal connects to the left/right speaker channels. The red wire de8888888888888888888888888888888888888888888888s positive /