Simple GSM landline telephone. Large buttons with bright backlight and a readable display make it useful at home or in the office. It has a built-in jack port for headsets. Features: Frequency: GSM 900/1800 Display: backlit monochrome 124×64 px MicroSD card support: up to 32 GB Battery: 600 mAh Weight: 644g Large font and simple menu, Hands-free mode, Large comfortable keys, Radio/FM, Alarm clock, Calculator, Calendar and Audio jack: 3.5 mm Specifications: Dimensions: H:1.0 x W:1.0 x D:1.0 cm Guarantee:1 year Model Number: MM28D