DeTeWe Aastra 610d. Volume control: Rotary. Phonebook capacity: 200 entries. Display: LCD, Display resolution: 176 x 160 pixels, Display number of colours: Monochrome. Headphone connectivity: 2.5 mm. Weight: 0.12 kg, Dimensions (WxDxH): 49 x 22.5 x 135 mm