1. Function: audio amplification
2. Power supply voltage: DC 5V
3. Bluetooth version: 5.0
4. Chip type: PAM8403
5. Channel quantity: dual-channel stereo
6. Output power: 5W x 2
7. Amplification factor: 4 times
8. Installation hole spacing: 3.8 x 3.5cm
9. Size: about 4.5 x 4.2 x 2.5cm
10. Weight: about 22g