It features state-of-the-art Digital Hybrid Active Noise Cancellation (ANC), the latest chipset and its outstanding noise isolation. As soon as you put on the headset, you can concentrate on your work. The new Busylight is now even more noticeable and highly visible from all directions. The red LED automatically activates when you're in a call or meeting. You can activate it yourself at the touch of a button. Even in the middle of an open-plan office, the highly visible Busylight protects you from all disturbances. It have equipped this headset with powerful 40 mm speakers. Add to that the advanced digital chipset and the latest AAC codec. The result is unsurpassed music enjoyment. The intelligent 10-microphone technology and the new and improved digital signal processing algorithms ensure superior call quality in dynamic and noisy office environments.