ATT E5900B 5.8 GHz Cordless Answering System Polyphonic Musical Ring Tones, Battery Backupfor Power failure Operation, Conferencing/ Call Transfer, Sound Select, 2-way Page/ Intercom, Spare Battery Charger 50 Name/Number Directories in Handset, Handset Vibrating Ringer, Lighted Keypad, Lighted Display in Base, Last 10 Number Redial, Headset Compatible Caller ID/Call Waiting Features: Number Announce Caller ID, Image ID, Peraonalized Ringing Option, 50 Name / Number Caller ID History Digital Answering System Features: Message Retrieval from Cordless Handset, 25 Minutes of Digital Recording Time, Call Screening/ Intercept, Remote Access, Voice Prompts Base, Wall Mounting Adapter, 2 Cordless Handsets, 2 Telephone Line Cords, 2 AC Adapter, 4 - AA Recharchable NiMH Batteries,