2.4GHz digital system: The 2.4GHz frequency delivers clear sounds, even far from the base. The digital technology keeps calls secure from outside sources. Combo unit: This telephone combines the freedom of a cordless phone with the reliability of a corded phone. Digital answering system: Record up to 14 minutes of messages without the hassle of tapes. Messages can be retrieved remotely from the handset. Dual call-waiting caller ID capability: Find out who's calling, even if you're on the phone. LCD screens on the handset and the base display the name and number of the caller. Requires phone company service. Speakerphone: The base speakerphone works with the base keypad to enable you to make and take calls even when the handset isn't handy. Simply pick up the handset to transfer a call to the handset. Call conferencing capability: This phone allows you to easily conference calls between the base, cordless handsets and outside callers. Base keypad: Make calls directly from the base of this phone, with or without the handset, with the built-in keypad.