Panasonic Wireless headset and Computer Headset, Work with Panasonic KX NT553, NT556, DT543, DT546 and Computer Softphones
Amazon.com: Panasonic Comfort Fit Headset for TCA Series Cordless Landline Phones, Foldable Headset with Flexible Noise-Cancelling Microphone and Volume Control, 2.5 mm Plug, Grey/Silver KX-TCA430 : Electronics