Avaya AWH450N Wireless Headset System delivers superior sound quality to clarify and enhance customer communications. 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 Avaya SupraPlus Elite 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. NOTE: The following Avaya telephone models do not require the additional HL10 accessory to obtain full hook switch control and ring detection: 2410, 2420 4610SW, 4620, 4620SW, 4621SW, 4622SW, 4625SW, 4630, 4630SW 9620, 9630 (with 9600 series hookswitch control cord) 6416D+M, 6424D+M Partner 18D AWH450N Features: Noise-Canceling microphone Monaural headset 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