Uniden ELBT585 5.8 GHz Digital Expandable Cordless Flip Phone with Color LCD, Answering System, and Bluetooth Capability (Titanium) 5.8 GHz digital signal; expandable to 10 handsets, 1 included Bluetooth enabled for compatible wireless headsets Digital answering system, 15-minute maximum recording time Recordable ringtones; full-color handset LCD Caller ID/call waiting compatible, 100-call memory