At a glance
You can use the Plug & Wireless feature via a USB cable.
If you use the Plug & Wireless feature by connecting a USB cable, you can use the microphone.
The USB audio device is displayed as ‘TONE-T90QC’.
1.Plug in the USB-C cable to the charging case.
2.Plug in the USB-A cable to the desired device.
3.Wear your earbuds.
4.Slide the Plug & Wireless mode switch to the right.
5.The indicator light on the charging case is flashing green.
6.Once the charging case and earbuds are connected, the green light turns off and the battery status of the case is displayed.