Integrated PAM8403 (power amplifier) + Bluetooth (CA-6928),Direct 5V power supply, connected to Bluetooth, you can output the speaker The Mini design power amplifier board is easy to be placed in the small internal space of various digital products with high amplification efficiency Easy to use 5.0 Bluetooth module Stable performance and strong reception signal Product name: CA-8469 Bluetooth power amplifier integrated module Input voltage: 5V Product size: 35mm x 20mm x 3mm Product advantages: Integrated PAM8403 (power amplifier) + Bluetooth (CA-6928) Direct 5V power supply, connected to Bluetooth, you can output the speaker Definition: OUT-R: right channel, OUT-L: left channel Colour:green Material:PCB Package Contents: 2 x Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.