Speaker Amplifer Kit. This kit contains PAM8403 Amplifier Board, Bluetooth Module, 4056 Battery Charging Module. You just need 2 Speaker and 1 18650 lithum ion battery to power. That's all, you circuit is complete and you have a new speaker. PAM8403 support dual speaker up to 5 watts each. you can use 2 pcs battery also to incease th back up time. Connection should be in Parallel of two battery. For you better understanding we have added the circuit diagram too.
PAM8403,Bluetooth Receiver, 4056 Charging Module, Full battery Speaker Kit Board
Product Dimension-
Pam 8403 Module
L X W X H - 19 x 3 x 22mm
Bluetooth Module
L X W X H - 19 x 4 x 23mm
4056 Module
L X W X H - 18 x 4 x 30mm
Weight - 4 grams
Country Of Origin : China