Plantronics SAVI W8220-M Office Stereo DECT Wireless 3-in-1 Headset - P/N 207326

It allow connection to 3 different devices. The stereo (dual ear) noise canceling (ANC) speakers blocks out most of the background office noise. It can also be used as hi-fi stereo headpones to stream music from your Bluetooth device or computer.

eBay