Motorola MD481 2.4 GHz Digital Expandable Cordless Phone with Dual Handsets and Answering Device (Silver) 2.4 GHz digital signal; expandable to 4 handsets, 2 included Caller ID/call waiting, 40-call memory Integrated digital answering machine, 15-minute record time 99-number internal phone directory Intercom, 3-way conferencing