Automatic Swing Wiggle Phone Shaker Motion Step Earning Counter for Pokemon Go Step Counter Features: Step Counter Made of high-quality metal and plastic for durable use; Each joint is hand soldered. Place the phone on the pedometer and Step Counter will swing all the time and calculate automatically. With pokemon go this allows you to hatch eggs and get the km to get the bonuses all week. You can stop the swing, then the rocker can be used as a mobile phone holder. Step Counter Powered by 4*AA Battery or USB charging to operate at the same time; Lightweight and easy to use. A good craft ornament, placed on a desk, can be used as an artistic decoration. NOTE: Use rubber bands to fix the mobile phone and the Phone holder compactly, do not leave any gaps.or won't work well. Step Counter Specification: Type : Step Counter Step Counter Material : Metal + plastic Step Counter Suitable for Phone : 4-7inch(screen) Package Included 1* Step Counter 1* USB Cable A Few Rubber Bands