The OKY3166 is an audio module manufactured by OKYSTAR that supports Bluetooth V5.0 and BLE, and an amplifier. It offers 3.7V to 5VDC input voltage and is suitable for a variety of wireless audio applications. This module also features Bluetooth low energy transmission, headset, hands-free, A2DP, AVRCP, and SPP profiles. Other features include Direct 6, Echo Cancellation, 1-mic Bidirectional Noise Suppression, and High-Fidelity For bothTx/Rx. Additionally, the integrated hardware codec supports G.726, G.711, G.722, PCM, etc. The module is also compliant with FCC/ CE/ RoHS/ IC/ Bluetooth standard, making it suitable for a variety of applications.