It impresses with state-of-the-art digital hybrid active noise cancellation (ANC), the chipset, and its outstanding sound isolation. As soon as you put on the headset, you can work with focus. The busylight is now even more prominent and visible from all directions. The red LED is automatically activated when you are in a call or meeting. You can also activate it yourself with the press of a button. Even in the middle of open-plan offices, the highly visible busylight protects you from all distractions. This headset is equipped with powerful 40mm speakers, along with an advanced digital chipset and the latest AAC codec. The result is unparalleled music enjoyment. The intelligent 10-microphone technology, along with the new and improved algorithms for digital signal processing, ensures outstanding call quality in dynamic and noisy office environments.