The BW900 is the first wireless office headset to combine multi-connectivity with 100m range. It gives users the freedom to make and receive calls on any phone from practically anywhere in the office - hands free. And switching between calls on the office phone, mobile phone or PC can be done effortlessly at the touch of a button. In addition, the BW 900 features Adaptive Intelligence techonology specifically developed by Sennheiser Communications to filter out distracting background noises for personalised comfort and high quality speech transmission.The ONLY 100m wireless Bluetooth Office Headset that takes calls from your desk phone.The ONLY 100m wireless Bluetooth Office Headset that also takes calls on your mobile phone.The ONLY 100m wireless Office Headset that has multiple connectivity: You can take office and mobile calls on ONE headset. The ONLY wireless Office headset with Adaptive Intelligence™: Listens to your surroundings as you move and adjusts the volume accordingly.The ONLY wireless Office headset with the safety of ActiveGard: Protecting you from in-line sound problems.