7.About the microphone function in BTR11

The in-line remote control and microphone function in headphone are not supported by the BTR11. You would need to use the microphone in the BTR11 when connecting BTR11to headphone with microphone.

[The game voice has the problem of poor sound quality. Is it possible to improve it later?]

The game Bluetooth voice quality is poor, which is due to to the game app and mobile phone system. And after many mobile phones enter  games, they will switch to mono mode, and the sound quality is even worse. Not directly related to the BTR11.