ITEM NAME:PAM8403 Dual-channel Bluetooth Digital Amplifier Board Rechargeable Module #gib Store Home Promotion Hot Item Add to Fav.Chip model: PAM8403. 1 X Bluetooth Digital Power Amplifier Board. Number of channels: 2. Maximum power: 5W+5W. 2 button is the play pause button, press pause, then press play again. Due to the different display and different light, the picture may not show the actual color of the item.