The One Talk W78HV is a sleek, professional IP DECT cordless handset (made by Yealink) for business, featuring HD voice, noise cancellation, a 2.4" color screen, Bluetooth/3.5mm jack, and long battery life (21 hrs talk/166 hrs standby), plus quick charging; it pairs with a W78B base station for clear, mobile communication with vibration alerts and belt clip for portability, supporting up to 5 handsets per base.