Feature: 1. Multi-Audio Source Selectable: This device offers a of audio input , including Bluetooth-Compatible , FM, AUX, U-disk, and TF Card, enabling the playback of MP3 or lossless music files with a screen display indicating the current audio source. Users can control the music playback functions such as play/pause/next/prev/vol+/vol- using either the remote controller or on-board buttons. 2. Bluetooth-Compatible Player : With its built-in Bluetooth-Compatible audio receiver and power amplifier, this device can directly drive 4ohm 3W speakers, producing clear and high-quality sound. 3. LED Spectrum Display: The device also features 12 pink/blue/green LED spectrum indicators that flash in sync with the music, creating a dynamic and visually stunning lighting effect. The LED audio indicator flashes at both ends simultaneously, and the sensitivity is adjustable using the potentiometer. 4. Dual Channel Stereo Speaker: The device can drive two 2.0 3Wx2 speakers, producing clear and powerful stereo sound. Parameter: 1. Product Name: LED Spectrum FM Bluetooth-Compatible Audio Speaker DIY Kit 2. Work Voltage: DC 5V 3. Work Current: Greater than1.5A 4. Speaker: 3W 4ohm 5. Channel: Dual-Channel Stereo 6. Audio source: Bluetooth-Compatible /FM/AUX/U-disk/TF Card 7. FM station: Automatic radio search 8. Receiver Frequency: 87.0MHz~108.0MHz 9. Frequency accuracy: 0.1MHz 10. Control Type: Bluetooth-Compatible /Remote Controller/On Board Button 11. LED Color: Pink/Blue/Green 12. Output type: Speaker 13. Audio format: APE/FLAC/WAV/MP3/WMA 14. Power interface: DC-005 Power Socket 15. Work Temperature: -20℃~85℃ 16. Work Humidity: 5%~85%RH note: The actual product is a kit. The appearance and color of some accessories are randomly distributed, Cannot be cho the specific appearance and color.and do not affect the use. Material: Metal,Plastic colour: Transparent Package Contents: 1 x Audio Speaker DIY Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.