Experience the best in long-range coverage and clarity, provided by a unique antenna design and advanced noise-filtering technology. Calls have never sounded so rich and life-like. Enjoy high-definition sound with HD voice, and receive crystal-clear communication. Call going longer than expected? A second battery compartment enables you to change the battery mid-conversation for increased talk-time. Answer and end calls directly from the headset. The headset is optimized to work with major softphone services. Get full integration and remote call control on the cordless headset with free downloadable PC software.