PAM8403 2 Channel USB Power Audio Amplifier Module Board 3Wx2 Volume Control

Specifications:
Operating voltage: 2.5V-5.5VMaximum output power: 3W*2(5V 4Ω)Length: 29mmWidth: 20mmOverall height after installed is about 16mm.
Note:
Please make sure the power supply is not more than 5.5V and please don't do reverse polarity for '+' and '-', or else, it will burn the board.
Package included:
1 x PAM8403 Audio Amplifier Module