From the Manufacturer:
VOYAGER 4200 OFFICE AND UC SERIES: Bluetooth® wireless headset systems for office workers
Power up productivity for office workers with Voyager 4200 Office and UC Series Bluetooth® wireless headsets. Connecting is seamless—desk phone, smartphone or computer. Outstanding audio, freedom to roam.
FREEDOM TO ROAM
Now everyone can roam around the office—while staying on the call. Give them more room to move, and boost productivity at the same time, with an expansive wireless range up to 91 m/300 ft* with the Office models and up to 30 m / 98 ft with the UC models.
SUPERIOR POLY AUDIO
Experience legendary Poly acoustic performance, whether listening to media, collaborating with co-workers or wanting to hear your surroundings. Outstanding noise canceling and dual microphones help block out nearby talkers, too.
VERSATILE, EASY CONNECTIVITY
One word: flexibility. These wireless headsets give users seamless connectivity to computers and smartphones. For everyone who’s using multiple devices in the office—and prefers familiar Bluetooth® technology—endless productivity.
STYLE, CHOICE AND COMFORT
Workers in open offices need options. So these wireless headsets come in two over-the-head styles. Mono, so users can hear their surroundings. Or stereo, for listening to media and making every conversation sound face-to-face. Soft headband and pillow soft ear cushions offer all-day comfort.