Feature: 100% brand new and high quality This device can swing your mobile phone automatically to increase the step counts. Brush Step Artifact,Automatic rocker,PK with wechat friend with no effots. Creative and unique mobile phone pedometer, powered by USB charge Suitable for mobile phone size below 6.2 inch. Automatic Stepper, Easy to Use, Walking Swing, Durable Two phones can be shaking at the same time. Exclusive use of high speed bearings,truly get permanent wear-free. Mute all the way,not disturbing is my tenderness,lunch break can also be refreshed. Plastic magnetic isolation,don't hurt the phone. Description: Material:Plastic/Alloy Color:As picture shown Diameter: 11cm/4.33" (Approx.) Total Length: 19cm/7.48" (Approx.) Package includes: 1 x Mobile Phone Pedometer 1 x USB Cable Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2. Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.