Gigaset SL78H. Phonebook capacity: 500 entries. Display resolution: 240 x 320 pixels, Display number of colours: 0.256000 M, Display diagonal: 55.9 mm (2.2 "). Headphone connectivity: 2.5 mm. Base dimensions: 66 x 49 x 31 mm, Handset dimensions: 48 x 18 x 139 mm. Talk time: 15 h, Standby time: 200 h, Battery technology: Lithium-Ion (Li-Ion)