Preparation

Part names and functions

How to control your earbuds

Charging the charging case

Charging the earbuds

Checking the remaining battery power of the earbuds or charging case

Powering on the earbuds

Powering off the earbuds

Wearing the earbuds

Replacing the ear tips

Downloading the Denon Headphones app

Connection

Connecting via Bluetooth

Connecting to the earbuds for the first time

Pairing with other Bluetooth devices

Connecting to LE Audio-compatible Bluetooth devices

Connecting to two Bluetooth devices simultaneously (multi-point connection)

Use

Listening to music

Listening to music using a Bluetooth connection

Playing in one earbud only

Setting the Active Noise Cancelling mode or the Transparency mode

Conducting phone calls

Answering an incoming call

Ignoring an incoming call

Switching the mic on/off (mute)

Using the call waiting function

Audio Playback and Phone Calls on a Bluetooth Device

Troubleshooting

Troubleshooting

Power does not turn on

The earbuds/charging case cannot be charged

Cannot charge wirelessly

Cannot connect via Bluetooth

No sound comes out

Cannot hear sound from one earbud

Sound is distorted, noisy, or cuts in and out

Cannot make a phone call

Cannot connect earbuds to the Denon Headphones app

Touch sensor does not function correctly

Solution to the problem cannot be found

Appendix

Precautions for Use

Disposal of these earbuds

Trademark information

Powering on the earbuds

With the earbuds in the charging case, open the lid of the charging case.

The earbuds are automatically turned on and started the Bluetooth connection.

When connecting to a Bluetooth device for the first time, the earbuds are in the pairing mode after the power is turned on. Make the Bluetooth connection. link

Open case lid C840NCW