Gigaset S79H. Dialer type: DTMF, Dialer location: handset. Phonebook capacity: 500 entries. Display: graphical, Display resolution: 128 x 160 pixels, Display number of colours: 0.065000 M. Handset dimensions: 49 x 26 x 146 mm. Operating temperature range (T-T): 5 - 45 °C, Operating relative humidity range: 20 - 75 %