Accessory handset features DECT 6.0 technology to provide a greater call range without interfering with wireless routers. Handset speakerphone increases participation by allowing both ends to speak and be heard at the same time for conversations that are more true to life. Caller ID allows you to see the name, number, time and date of incoming calls at a glance. Backlit keypad and display provide excellent visibility in low-light environments. Eco-mode allows the system to use less energy to extend your battery life during prolonged use. Quiet mode silences the ringer to prevent interruption. Handset also includes a phonebook directory, voicemail waiting indicator, mute, any key answer, volume control, intercom between handsets, call block and more.