Office professionals with phone-intensive responsibilities can now answer or end calls while moving about the office—in unmatched comfort and with premium audio quality. Built on digitally-encrypted DECT 1.8Ghz technology, the Plantronics SupraPlus Wireless Professional Headset System combines the clarity of traditional corded technology with the mobility of wireless, so conversations can continue up to 300 feet from a desk phone. Product Features: Noise-Canceling microphone Binaural style Ensure call privacy with 64-bit digital encryption Extended hands-free talk time up to 10 full hours Roam up to 300 feet from your desk phone Over-the-head, comfortable design for all-day use Premium audio ensures quality customer communications