Philips SE7451B Cordless phone answer machine. Multi handset capability: Up to 5 handsets, Number of SMS Boxes: 10 (only 1 active), Personalization: Wallpaper. Volume control: Volume Control up/down. Phonebook capacity: 250 entries. Display: CSTN, Display resolution: 128 x 128 pixels, Backlight colour: White. Base dimensions: 140.5 x 90 x 92 mm, Handset dimensions: 162.4 x 46.5 x 29.8 mm