That is a good partner for the children, old people or Vulnerable groups or else. It is matchbox size and with 4 buttons like a small children mobile. Supposing you put it in the car or put it on children packet / neck, it will automatically report its position every some time you can set. You can call in to monitor the voice around it without disturbing. And of cause you can setup the ring swith on and talk with the holder each other. It supports geofencing too. Children can dial 1-4 phone numbers preset to talk like mobile.