Bluetooth Kit FM USB AUX Card MP3 Stereo Audio Player Module with Mic Support

Specification

• Speaker Support : 2x 5W
• Voltage Support : 3.7V to 5V
• Note 1 : Use carefully. Very sensitive device please watch video before connections.
• Note 2 : No Warranty. Non-replaceable and non-returnable product. 

Watch video before battery and speakers connection:

https://youtu.be/kktnzWowo2A