Allows natural, interactive two-way conversations (full-duplex). Users don't have to wait for speakers on the far end to stop talking before breaking into a conversation Users can speak in a normal voice up to ten feet away from the console More productive calls - no need to repeat yourself Three cardiood microphones provide 360-degree coverage so that everybody in the room can be heard clearly Automatically reduces room background noise - from fans, projectors, heating and air conditioning - for clearer sound and more efficient conferencing Automatically selects the microphone closet to the person speaking, eliminating extraneous background noises 2.5mm Jack: Provides connection to other communication devices, such as a mobile phone, for hands-free conferencing RCA Jack: Allows connections to other peripherals, such as an audio recorder Single Cord Connection to phone console Eliminates cable clutter on the tabletop No training required, connects into any analog phone jack Availability: Usually ships the same business day. POL-2200-15100-001MSRP: $499.99Our Price: Choose a link from this drop down box Amplifiers -M12 Vista Telephone Headset Amplifier -CA10 Cordless Telephone -MX10 Headset Switcher Adapter -A20 Telephone Headset Amplifier -P10 Plug Prong Adapter -S10 Telephone Headset System -T10 Headset Telephone -T20 Headset Telephone Headsets-Home & Office -Mirage H41 H41N -Supra H51 H51N H61 H61N -TriStar H81 H81N -Encore H91 H91N H101 H101N -H131N Freehand -DuoSet H141 H141N Cordless Phones Mobile Adapters Mobile Headsets M114 M124 M145 Computer Headsets Analog Computer Headsets Digital Accessories - Parts Low Priced Specials Refurbished Product 2 Year Warranty All product shipped within 24 hours ($50.00 minmum) - FREE OF CHARGE The Headset Guy PO Box 131791 Carlsbad, CA 92013 Phone: (888) 793-8976 This Web site is run by a distributor of Plantronics® products and is not otherwise affiliated with Plantronics®, Inc.