Silvercrest SBH 3.0 C1 Operating Instructions And Safety Instructions page 22

SilverCrest SBH 3.0 C1
automatically. With some models, you need to establish
the connection again via your mobile phone. Only one
mobile phone can be actively connected to the headset.
If you want to connect another mobile phone to the
headset, you need to repeat the pairing step as described
above.
20 - English