Participants can keep talking up to 150' away from the base. Dynamic noise reduction (DNR), DECT 6.0 technology and a full-duplex speakerphone ensure natural, uninterrupted sound quality. Speakerphone includes four wireless and two fixed DECT 6.0 microphones with Orbitlink Wireless Technology. With 8 hours of talk time for each microphone, you have plenty of room to keep the meeting going on one charge. Speakerphone features a two-line backlit display with date and time and battery-low indicator with flashing LED