Mpow M30 Plus - Optimizing Volume and Effect; Using with Skype; Skype Audio Source Configuration

3. Make sure you’ve adjust to the appropriate volume and put the bottom of the headphone right to your mouth to
get the better effect.4. Suggest selecting the receiver mode while using the third-party software to play.
How to use Skype with Bluetooth headphone?
When using Skype, you need to set the audio source of the microphone and loud-speaker to "Bluetooth SCO
Audio".