Plantronics Plantronics CA12CD Cordless Push to talk (DECT 1.92 GHz) wireless mission-critical headset with plug prong adapter--Audible indicators for such conditions as out-of-range, low battery, and sending- and receiving-sensitivity changes, Quick disconnect headset cord allows you to walk away from the phone without removing the headset--Two charging wells; one for the remote unit while the other facilitates charging the extra battery pack (supplied with unit)