When connecting the INZONE Buds with a device that does not support LE Audio via Bluetooth, there is no sound at all, or no sound is heard from the Left unit even after connecting via the USB transceiver.

If you use a device that does not support LE Audio, no sound is heard from the headphones when they are connected via Bluetooth. Even after disconnecting the Bluetooth connection, without initializing the headphones, no sound is heard from the Left unit, or the voice guidance Bluetooth mode is heard from the Left unit.

If the issue occurs, follow these steps to initialize the headphones and connect with the device using the USB transceiver:

1. Initialize the headphones:
   1. Set the earbuds into the charging case.
   2. Leaving the charging case open, press and hold the initialize button on the back of the charging case for about 15 seconds or more. After about 15 seconds, the indicator on the charging case flashes in orange for about 5 seconds.
   3. Release the finger within 5 seconds after the indicator on the charging case starts flashing in orange. When the initializing is complete, the indicator flashes in green 4 times.
2. Connect with the device using the USB transceiver:
   1. Set the slide switch of the USB transceiver to the correct side (PC or PS5).
   2. Turn on the device.
   3. Connect the USB transceiver to a USB port of the device.
   For details, refer to the Help Guide.

Hint: To check if your device supports LE Audio, refer to the Compatibility section of the product page.