Panasonic KX-TGA273S 2.4 GHz DSS Accessory Handset for KX-TG2700 Series, with AM/FM Clock Radio (Silver) 2.4 GHz frequency-hopping digital spread spectrum signal Compatible with Panasonic KX-TG2700 series phone systems AM/FM radio with alarm clock on charging base Caller ID; voice mail message waiting indicator Supports 1 or 2 lines; handset speakerphone