Troubleshooting
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Remove obstacles between the product and the Bluetooth device and place them closer together. For
details, refer to "For a more comfortable Bluetooth communication experience" (p. 5).
Cannot hear the voice of the caller / Voice of the caller is too quiet
Turn on the power of the product and the Bluetooth device.
Turn up the volume on the product and the Bluetooth device.
Confirm that the product and Bluetooth device are connected via HFP/HSP (or phone connection).
Disable pairing for the product and the Bluetooth device, then pair the product with this device again.
Switch the sound output of the Bluetooth device to the product.
Wear the product properly.
My voice is too quiet for others to hear
Wear the product properly. Not wearing the product properly while talking on the phone may cause your
voice to be too quiet for others to hear.
The product cannot be charged / Charging takes too long
Confirm that the product is connected directly to the computer and not to a USB hub or other intermediate
device.
Charging may not be possible with some computers. Use a different computer or a commercially available
USB power adapter.
Securely connect the included USB charging cable and charge the product.
Charge the product in a well-ventilated place (10 to 35°C (50 to 95°F)) away from direct sunlight.
For details about how to operate your Bluetooth device, refer to the device’s user manual.
