User's Manual
Table Of Contents
- Important safety instructions
- Package contents
- Product overview
- Getting started
- Using the earphones
- Information on the rechargeable battery, the charging process and the first use
- Charging the rechargeable battery of the earbuds and the charging case
- Connecting the earphones to a Bluetooth device
- Information on the Bluetooth wireless connection
- Pairing the earphones with a Bluetooth device
- Switching the connection to paired Bluetooth devices/“Connections”
- Disconnecting the earphones from a Bluetooth device
- Pairing the earbuds with each other (optional)
- Installing the Smart Control app
- Selecting suitable ear adapters for optimum fit of the earbuds
- Inserting the earbuds into the ears
- Switching the earphones on
- Switching the earphones off
- Adjusting the volume
- Using the voice assistant/voice dialing
- Controlling music playback
- Making calls using the earphones
- Using the Auto Call function
- Displaying the battery charge status
- Adjusting sound effects/the equalizer
- Setting the voice prompts/beep sounds
- Customizing the control functions
- Storing or transporting the earphones in the charging case
- Care and maintenance of the earbuds/charging case
- FAQ/If a problem occurs ...
- Specifications
- Manufacturer Declarations
Care and maintenance of the earbuds/charging case
CX 400BT True Wireless | 29
Care and maintenance of the
earbuds/charging case
▷ Clean the product only with a soft, dry cloth.
▷ You can clean the silicone ear adapters under lukewarm running
water. Allow the ear adapters to dry at room temperature for at
least 12 hours before putting them back on the earbuds.
▷ Clean the charging contacts on the earbuds and in the charging
case from time to time using e.g. a cotton swab.
Replacing the ear adapters
For reasons of hygiene, you should replace your ear adapters from
time to time. Spare ear adapters are available from your Sennheiser
partner.
1. Pull the ear adapter away from the in-ear sound tunnel.
2. Mount the new ear adapter to the in-ear sound tunnel. Ensure that
it locks into place.
CAUTION
Liquids can damage the electronics of the product!
Liquids entering the housing of the product can cause a short-circuit
and damage the electronics.
▷ Keep all liquids far away from the product.
▷ Do not use any solvents or cleansing agents.
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