Which Bluetooth headsets are recommended?

Whether Bluetooth® devices can communication with each other is a profile question. It is important that they support and use the same Bluetooth® profile for different functions.

The Gigaset supports the Headset Profile and Handsfree Bluetooth profil for communication with a headset. 

You can operate headsets on your handset that have the Headset or Handsfree profile. If both profiles are available, the handsfree profile is used to communicate.

Known BT-Headsets that do not work correctly with S810H, S820H and SL400H:
- Jabra Wave BT 3.0 (100-93050000-60)