The COMfortel D-Stick EZC-5200BS is the Bluetooth extension for your existing COMfortel D-400. The extension with Bluetooth v4.2 allows various Bluetooth headsets available on the market to be connected to the COMfortel D-400.
Using a headset gives you more freedom of movement at the workplace. Gain greater flexibility at your desk and have the chance to concentrate fully on your conversation. In addition, you can move your head and hands freely and thus avoid painful poor posture as well as permanent postural damage.