Sennheiser ConC 400 Series Instruction Manual page 31

Using the earbuds
Making calls using the earbuds
The call functions are only available when the earbuds and the
smartphone are connected via Bluetooth.
Some smartphones and telephony apps (e.g. WhatsApp, MS Teams,
WeChat) may not support all call control functions.
During a call, you can use the
call functions.
Making a call
▷
Dial the desired number on your smartphone.
If your smartphone does not automatically transfer the call to the
earbud, select "ConCPlus1" as the output device on your smart-
phone (see the instruction manual of your smartphone if neces-
sary).
Accepting/rejecting/ending a call
If your earbuds are connected to a smartphone and you receive a
call, you hear a ring tone in the earbuds.
If you are playing music when you receive a call, the music pauses
until you end the call.
Right or left multi-function
button
Press 1x
Double tap
Press for
2 sec
right and/or left earbud
Function
During a call:
Ambient balancing
In case of an incoming call:
Accepts a call
In case of an incoming call:
Accepts a call
During a call:
Ends a call
During a call:
Ends a call
In case of an incoming call:
Rejects a call
to control the
ConC 400 | 31