1)Compatibility with Bluetooth 1.2 and 1.1 enabled devices 2)Includes the latest Bluetooth 1.2 standard for better call quality, less interference and faster connections 3)Increased performance for up to eight hours of talk time and up to 200 hours of standby time 4)Foldable boom microphone for compact storage 5)Removable ear hook for placement on either ear 6)Multi-function button to control several functions including receive/answer/end calls, call hold and 3-way calling 7)Headset indicator LED to provide a visual cue regarding headset status