2 Handset Answering System with Caller ID/Call Waiting- Simulated full-duplex handset speakerphone- 22 minutes of digital recording time- 30 name and number caller ID history- Extra large display- Table and wall mountable- Backlit display and keypad- ECO mode power-conserving technology- Quiet mode- Call block- Expandable up to 5 handsets accessory handset EL50005- DECT 6.0- Call screening- Call intercept- Remote access- Message retrieval from handset- Message time stamp- Intercom between handsets- Conference between an outside line and up to 4 cordless handsets- 50 name and number phonebook directory- Volume control- Voicemail waiting indicator- Last 10 number redial- Mute- Any key answer- Battery type: 2.4V 300mAh nickel metal-hydride