Fangrui Product Details 1. Diy Kit: The Diy Kit Enables You To Assemble The Speaker Yourself, Providing A Hands-on Experience And A Sense Of Achievement On Completion. 2. Lm386 Audio Amplifier: The Lm386 Amplifier Chip Enhances Audio Signal Amplitude, Optimizing Your Listening Experience. 3. Dual Input Method: The Speaker Accepts Both Bluetooth And Auxiliary Inputs, Making It Adaptable To Different Audio Devices. 4. Level Indicator: The Level Indicator, Also Known As A Spectrum , Lets You Monitor The Output Level Of The Audio Signal, Adding An Interactive Engagement For Users. 5. Notice: This Item Is Diy Kits , You Need To Assemble It Yourself ! Product Name: Lm386 Bluetooth Small Speaker Diy Parts Power Supply Method: Dc5v (mobile Phone Charger/5v Adapter/power Bank) Power Amplifier Chip: Lm386 Audio Input: Bluetooth Or Audio Input Auxiliary Function: Level Indication (spectrum Function) Speaker: 5w 4 Ohms Shell Size: Height 102 Mm X Length 61 Mm X Width 70 Mm Finished Product Weight: 215 G After Powering On, The Phone