Caller identification with voice announcement. Caller information is communicated to you through the voice output of the mobile unit, so you know who is calling without having to glance at the display of the base unit. Full duplex hands-free function. You can communicate with your conversation partner while keeping your hands free, which is convenient if you want to take notes, for example. Additionally, everyone else in the room can also participate in the conversation. The monitored mobile unit automatically calls the supervising mobile unit upon sound detection. When parents need to leave their baby alone, the mobile unit picks up the sound of the baby's crying and notifies the parents via a mobile unit in another room. The notification can also occur through an external number. In Eco-Plus mode, the transmission power is reduced to zero. The base unit remains off until a call comes in or a mobile unit is activated. The high capacity of the battery allows for a maximum talk time of 18 hours, so you can now talk longer. Without calls, the battery of the mobile unit lasts about 12 days.