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 6.0 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. 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.