Firm joins a headset to virtually any cell phone. It enhances the excellent of cell phone calls by reducing backdrop disturbance and providing a regular, amount stage for cell phone calls. It also provides innovative listening to security, and comes with a headsets / device change to easily direct your cell phone calls. Works with just about any cell phone with a flip plug. Speech pressure for a regular, user-friendly amount stage and top-of-the-line listening to security. Speech switching helps backdrop disturbance. Headset/handset change, moving amount control, click less mime change. Extended battery energy — through GN Netcom's exclusive, user-selectable battery-save feature. .