Sony Ericsson releases in Japan its HBH-DS205 Bluetooth headphones for SE mobile phones. The HBH-DS205 supports Bluetooth 2.0 + EDR that is compatible with A2DP, AVRCP, HSP, and HFP. The maximum working distance is 10m. It comes with also a 3.5mm headphone jack for it to work with other deivces such as MP3 players.
The Bluetooth headset offers 20-20,000Hz frequency response. It is really light weight (13g).