Uniden TRU8888 5.8 GHz Digital Expandable Cordless Phone with Corded Base, Dual Keypads, and Answering System (Black/Silver) 5.8 GHz digital signal; digital answering system Expandable to 10 cordless handsets, 1 included; corded handset on base 100 caller ID/memory dial locations in base, 100 more in handset Conferencing, base and handset speakerphones, room/baby monitoring 10 speed dials locations; tri-lingual menu options