Product selling point: 1: Small size 2: Wide range of applications 3: cost-effective 4: Wireless audio playback can be achieved quickly. 5: Simple to use Product description: The 5W Bluetooth power amplifier module adopts a low-power lossless dual-channel stereo Bluetooth 4.2 module and a 5W power amplifier chip, which can quickly realize wireless audio playback. Features: 1. Low-power lossless dual-channel stereo Bluetooth 4.2 module 2. High-end 5W audio amplifier chip. 3. Lead out the main pins (previous song, next song, mute, shutdown), which is convenient for external device control. 4. Working voltage 5V 5. Size 50MM*45MM (manual measurement) Package Included: 1* 5W Bluetooth power amplifier module