Full Duplex Handset Speakerphone Caller ID/Call Waiting - stores 30 calls Backlit keypad and display Table - and wall mountable ECO mode power-conserving technology DECT 6.0 digital technology Compatible with VTech IS6200 DECT 6.0 cordless headset 50 name and number phonebook directory Conference between an outside line and up to 2 cordless headsets Last 10 number redial Mute Any key answer Volume control Trilingual prompts - choose between English, Spanish and French