Panasonic KX-TGA600B 5.8 GHz Expandable Digital Cordless Handset (Black) Expandable digital cordless handset works with Panasonic telephone systems: KX-TG6020, KX-TG6050, and KX-TG6070 Speakerphone built into handset for hands-free use 3-line backlit LCD 2.5 millimeter headset jack for use with hands-free headsets Wall-mountable design