Main Features Plantronics H251H SupraPlus Wideband Headset Monaural The Plantronics H251H is a special made voice tube headset with HAC speakers (Hearing Aid Compatible). These special HAC headsets deliver a high levels of magnetic energy. The H251H are compatible with BTE and ITE hearing aids, assuming they have telecoils (T-coils). Plantronics H251H SupraPlus Wideband helps overcome the challenges posed by traditional technology, delivering heightened speech clarity and life-like fidelity, when used in a wideband enabled network. Users will experience greater satisfaction through enhanced intelligibility and reduced miscommunication. Designed for over-the-head comfort.