Panasonic KXTGA950B Dect 6.0 Handset 2-Line Landline Cordless Expansion Handset (3-Pack) Panasonic KXTGA950B Dect 6.0 Handset 2-Line Landline Cordless Telephone (3-Pack) 1.9GHz Extra Handset Dedicated for Cordless Phones by the FCC Up to 12 Hours Talk Time / Up To 5 Days Standby 3-Way Conferencing with Headset Jack Will Not Work Without Base: KX-TG9541B, KX-TG9542B, KX-TG9581B, KX-TG9582B