Music

• No sound

• Check that both the headset and the BLUETOOTH device are turned on.

• An A2DP BLUETOOTH connection is not made between the headset and the BLUETOOTH device. Use the BLUETOOTH device and make an A2DP BLUETOOTH connection.

• Check that music is being played back by the BLUETOOTH device.

• Check that the volume of the headset is not set too low.

• Turn up the volume on the connected device if necessary.

• Pair the headset and the BLUETOOTH device again.

• Low sound level

• Turn up the volume of the headset.

• Turn up the volume on the connected device if necessary.

• Low sound quality

• Use the BLUETOOTH device and switch the BLUETOOTH connection to A2DP (Advanced Audio Distribution Profile) when HFP (Hands-free Profile) or HSP (Headset Profile) is set.

• If you have previously connected this BLUETOOTH device, only an HFP/HSP BLUETOOTH connection may be made when the headset is turned on. If this happens, use the BLUETOOTH device and make an A2DP BLUETOOTH connection.

• Sound skips frequently during playback.

• Set the headset to the “Priority on stable connection” mode.

For details, refer to “Selecting the sound quality mode of music playback.”

• The noise canceling effect is not sufficient.

• Make sure that the noise canceling switch is set to NC.

• Change the earbuds to another size that fit your ears. Adjust the earbud position to fit your ears comfortably. When you change the earbuds, install them firmly on the headphones to prevent the earbud from detaching and remaining in your ear.

• The noise canceling function is effective in low frequency ranges such as airplanes, trains, or offices (near air-conditioning, etc.) and is not as effective for higher frequencies, such as human voices.