Solid Performance Integration: Two bluetooth speakerphones could be daisy-chained to add more attendees. 6 mics arranged in 360-degree array, Plug and play, providing you excellent conferencing experience. Each conference speaker could be used separately. Battery life is rated at 18 hours for call time, helping you keep productive in your home or at the office. Daisy-Chain Speakerphones for Large Meeting Room: The two speakerphones could be connected by an aux audio cord(2.4 meters), one speakerphone rated for up to 6 attendees in a conference room, daisy chain two speakerphones in a larger room to involve 12 attendees. You will get a noticeable bump up in sound and calling quality.