Specifications:This device can swing your mobile phone automatically to increase the step counts.Creative and unique mobile phone pedometer, powered by USB charge or battery(not included).Suitable for mobile phone size below 6.2 inch.Item Name: Mobile Phone PedometerMaterial: Alloy, PlasticPower Supply: USB Charge/4 x AA Batteries (Not Included)Features: Automatic Stepper, Easy to Use, Walking Swing, DurableDiameter: 11cm/4.33" (Approx.)Total Length: 19cm/7.48" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Mobile Phone Pedometer1 x USB Cable (Phone Not Included)