The .Audio 910 Bluetooth Headset combines all day wearing comfort, superb audio quality and unique USB technology to allow calls from PC and from mobile phones in the same headset. And Its unique Bluetooth voice adaptor ensures there are no drivers to install on your PC and a true plug and play experience offering control of softphone applications from the headset. This product also features WindSmart technology, making conversations possible even in windy conditions. Plus, the latest lithium battery technology which will provide up to 6 hours talk time and 100 hours on stand-by. This combination of the latest software technology with perfected ergonomic design means you can enjoy the freedom of wireless hands free communication, through your PC soft phone AND your mobile phone.