Add an extra unit to your compatible Panasonic KX-TGE433B & KX-TGE445B Series telephone systems with this Panasonic accessory handset. Powerful communication technology ensures clear calls when you're within range of the base unit. Clear calls and easy set up means this phone is the perfect addition to any room that needs a phone. This Panasonic accessory handset also includes caller ID for easy identification of callers.