Specifications: 1.Multi functions:Step counter function, Distance travelled(KM),Calorie calculation 2.Power supply:1 x 1.5V "AG-13/LR44" button cell 3.Available Color:Green,Red, Black,blue(ships in random colors) 4.Demension: LCD Screen:1.77 x 1.77 inch / 4.5 x 4.5 cm (L x W) Pedometer: 2.36 x 1.77 x 1.18 inch /6 x 4.5 x 3 cm (L x W x H) 5.Material: ABS,Acrylic 6.Weight:32g/1.12oz Package includes: 1 x Multi function Pedometer 1 x instruction book Operation: The paces are detected via the movement of the waist for accurate reading, mount the unit closer to the center of the body