not because of fashion, but for health reasons it is important not to vary your weight too often or too quickly. so it is good to know exactly where you stand every day with the personal scales from medisana. performance type: electronic personal scale maximum weight capacity: 150 kg auto power off: y units of measurement: kg,lb shape: rectangle colour of product: white display display: lcd display size (hxv): 69 x 34 mm power battery type: cr2032 number of batteries supported: 1 battery voltage: 3 v