Oh goodie, a world's first. This time it's courtesy of Lubix's UBHS-PH2 Bluetooth headset sporting Qualcomm's Micro-Electro-Mechanical Systems (MEMS) display. The reflective display sports Interferometric Modulation (IMOD) technology to avoid battery-draining backlighting. Otherwise, we're just looking at the nub end of a stereo Bluetooth 2.0+EDR headset presumably offering the same A2DP, AVRCP, HSP, and HFP profiles available in their rest of their lineup -- which isn't a bad thing.
Read -- Lubix UBHS-PH2
Read -- Qualcomm MEMS display