The Gigaset C570 Duo has number recognition. So you always see who is calling. In addition, you save yourself a lot of trouble looking up phone numbers. You store up to 200 contacts in the integrated telephone book. With the built-in color screen and the illuminated keyboard you can also operate the Gigaset in the dark without any problems. The device has an extra loud ring tone and does not disturb when used with a hearing aid. This makes this Gigaset also usable for the hearing impaired. This set consists of 2 handsets, so that you can be reached at 2 different places in the house. Do you want more telephones? Expand your network to a maximum of 6 handsets.