Panasonic KX-TG2237S 2.4 GHz Digital Cordless Speakerphone with Caller ID 2.4 GHz digital signal with 39-channel autoscanning Supports caller ID with call waiting, audible caller ID announce 30-call caller ID history, separate 50 name-and-number dialing directory Display and handset dialing; dual digital duplex speakerphones Intercom, handset locator, out of range indicator