This bundle product not only includes a dial pad telephone set with a monaural headset, but also comes with a binaural headset. So you can choose the headset you prefer when working, and the extra headset can be a backup replacement when one of them stops working. AGPTEK headset dial pad telephone is ideal for small offices and home-based agents in telephone intensive situations, this is a fully functioning single-line telephone with conveniently arranged controls. It is the best choice for anyone who spends a lot of time on the telephone - such as Phone sales, Telephone Counseling Services, Insurance, Hospitals, Banks, Telecom operators, Enterprises- and who wants to take up minimum desk space for a telephone/headset system. Telephone Functions: FSK/DTMF caller ID display, automatic checking; 30 incoming, 5 outgoing number memories 2 digits PABX code setup; 32 digits pre-dial and edit; Green Backlight in-use; with LED indication Flash and Mute function; Headset speaker Turbine volume adjustment; Ringer volume hi-low-off adjustable; Flash time 100ms or 600ms choice; The on / off noise reduction function; Power save function Headset Specification: 150ohms speaker, to ensure the perfect voice quality Compatible for the most telephones in call center Application for Phone sales, Telephone Counseling Services, Insurance, Hospitals, Banks, Telecom operators, Enterprises. Microphone type: electret condenser microphone(ECM) Microphone sensitivity: 40db±3db Microphone voltage: 2.0v Receiver impedance: 150±10 ohm