Sales Description:With the GN 9120 wireless headset system, you can roam up to 300 feet from your desk, giving you the freedom to multi-task and share ideas with other people in your office without interrupting important calls. The GN 9120 is equipped with a multi-unit conferencing feature, allowing you to create wireless "virtual conference rooms" for up to four people. And to keep calls secure, it uses digital spread spectrum technology created for military applications, with signal "hops" every 90 seconds to eliminate eavesdropping. The GN 9120 weighs about 1 oz. and comes with a battery that offers up 8 hours of talk time.