Panasonic"s KX-TG4132M DECT 6.0 Plus 1.9 GHZ Expandable Digital Cordless Telephone, in Metallic Gray, consists of an answering system and 2 handsets. The DECT 6.0 Plus increases the frequency of error correction up to 80x, the transmission quality is improved and the phone range is extended. The Intelligent Eco Mode automatically lowers the power consumption when you are using the handset close to the base unit. Other features include Talking Caller ID, Call Block, and Call Waiting Caller ID (with subscription). And with the added Tone Equalizer you can control the bass, mid-range or treble tones in a caller"s voice for enhanced clarity. Additional features include silent mode, up to 4-way conference capability, and much more.