Purchased for use by elderly person with hearing difficulties. This device is ideal for people with damaged senses. By pressing a button the conversation is strongly amplifiée.Un custom sound and light indicates call reception. The hands-free function gives more share autonomie.D'autre preset 3 quick call buttons easy to use. The instructions included in the shipment and the setup menu are in German. I found the leaflet in French on the Internet. On first use take care to specify the "French" as the language
