In addition to the P1, T650 and S500 cellphones, Sony Ericsson also announced some accessories, including the DS980 hybrid Bluetooth stereo headset. This is a stereo headset that includes a metallic mirror pendant that has an OLED display and supports up to six hours of talk time. It can work with multiple devices at the same time and will be available worldwide Q3 2007.
https://gizmodo.com/sony-ericsson-p1-follows-up-p990-by-going-25-smaller-258711
Press Release [Sony Ericsson]