The main base features a caller blocking function that allows the user to program blocked numbers, and the handsets have text-to-speech talking caller ID and alarm clocks as well as battery level indicators. The main base is also a digital answering machine, and it supports up to three additional handsets, to a total of six. The handsets all have backlit LCD displays and backlit keys, and they have independent silent modes. Together, they can be used as an intercom system. Their expected battery life is about 5 hours of talk time, or 11 days of standby. This is one of Panasonic's higher-mid range cordless phone sets.