Philips Bluetooth stereo headsets support the Headset and Hands Free Profile for voice communication and the A2DP and AVRCP Profile for music streaming and remote control.
You can connect the headset simultaneously with a device that supports the Headset or Hands Free Profile and a Bluetooth stereo (A2DP) source, but not with two voice or Bluetooth Stereo devices. This capability allows you to listen to music and pick up any incoming calls, with the music stopping when you take the call and continuing after the call ends. (A feature called “StreamSwitch” in Philips headsets).
In practice this means you can:
NOTE: the HSP and HFP profiles offer limited-quality mono sound only. Refer to the user manual for your device.