Enclosed 3W speaker delivers improved sound quality when housed in the casing, providing clearer audio output. The transparent acrylic shell design allows a clear view of the internal structural circuits, making it suitable for practical teaching and training in electronic fundamentals and skills, as well as for electronic enthusiasts and beginners. Practical electronics production kit including a Bluetooth module, an 8002 amplifier, and peripheral components. After assembly, it can be connected to a mobile phone via Bluetooth or driven by an audio jack signal. Note: The parts are loose components and require soldering, assembly, and debugging by the user. Key benefits and features Clear sound in enclosure: The 3W speaker is optimized when installed inside the casing for better overall sound quality. Visible circuitry for learning: Transparent acrylic shell lets students and hobbyists observe internal circuits during assembly and testing. Complete kit for handson learning: Includes a Bluetooth module, 8002 amplifier, and peripheral components to build a functional audio device. Flexible connectivity: Can connect to a mobile phone over Bluetooth or be driven by an audio jack for wired playback. DIY assembly and experimentation: Suitable for practical projects, wiring practice, debugging, and system testing. Attributes and compatibility Function: Audio playback with amplification using a Bluetooth module and 8002 amplifier. Material: Transparent acrylic shell for visibility and protective casing. Connectivity: Bluetooth wireless connection to phones and devices; 3.5 mm audio jack input/output supported. Package type: Electronic production kit with loose parts requiring assembly and soldering. Performance: 3W speaker capable of delivering audible sound output within a compact kit. Use scenarios Education and training: Ideal for classroom or workshop demonstrations to teach electronic fundamentals, circuits, soldering techniques, and debugging. Hobbyist projects: Build a Bluetooth speaker or use as a learning platform for electronics enthusiasts to explore amplification and audio interfaces. Prototyping and learning: Use as a handson platform to study circuit design, assembly workflows, and system testing from component level to functional unit.