The lightest, most comfortable DECT headset Plantronics has ever made Plantronics CS540 Headset is setting a new standard for wireless desk phone communications. The new convertible headsets – the lightest DECT™ headsets on the market – feature streamlined design, enhanced performance, & the same great reliability. They offer hands-free productivity up to 100 meters away from your desk, & great collaboration options. Pair your headset with any base by simply docking it, or add up to three additional headset wearers into your call. Switch between narrowband audio to maximise battery life or wideb&, professional-grade audio to enable clearer conversations. Experience outstanding, wideband audio quality, & style like never before. Other key features include voice-dedicated DECT technology eliminating Wi-Fi interference, advanced wideband audio using CAT-iq technology, narrowband mode to preserve talk time, wideband mode for clearer conversations, a noice cancelling microphone to filter out background noise, enhanced digital signal processing (DSP) technology to provide a more natural sounding voice with the ability to conference in up to three additional CS500 range or SAVI range headsets Ideal for the busy fixed/hot desk office worker who needs to roam around the office. Pair the headset with a base simply by docking the headset, enabling quick set up in hot desk environments.