Poly Sync 20-M Speakerphone - Black (7S4M1AA)Sound like the professional you are with Poly Sync 20 USB Bluetoothsmart speakerphone for conference calls and music anywhere you work. Take it wherever you go it's got up to 20 hours of talk time. Dynamic audio Take conference room quality audio on the go. Enjoy remarkable sound from meetings to music and reduced echo and noise so you can be heard clearly. Works the way you do A programable button puts your favorite function at your fingertips play