Fangrui Product Details High Stability And Double-layer Magnetic Separation: There Are 3 Metal Balls At The Bottom Of The Phone Shake Wiggle Device Can Increase The Stability In The Process Of Swing; The Double-layer Magnetic Separation Will Prevent Phone Form Magnet Interferenceafter Connecting To The Powerautomatically Brush Steps Device: The Phone Swing Device Can Pretend That You Are Walking By Automatically Swinging, You Will Earn 7000-8000 Steps Per Hour Easily; It Is Ideal To Increase The Numbers Of Walks And Help You To Hatch Eggs In Pokemon Go Whetherat Sleep Or At Workconvenient And Noise-free Design: This Automatic Swing Motion Was Made Of Metal Bracket And Plastic Base, Which Can Be Used For A Long Time; It Is Very Easy To Disassemble And Carry For People Who Go Out; High Quality Metal Bracket Is Smooth So That Itwill Not Disturb Your Good Dreams Even When You Are Sleepingfit Multiple Phone Models: The Shake Wiggle Device Suits Most Mobile Phone Under 6.2 Inches, And Most Apples Also Can Be Used, Such As Google Fit, Walker And More; Besides, It Can Be Used As A Mobile Phone Holder, You Can Put Your Phone On The Steppedsafety Rocker While Watching Movies Or Listening To Music Without Blocking The Screeneasy To Use: The Phone Run Step Count Program Can Be Connected To The Power Source With The Usb Cable Or 4 Aa Batteries(not Included); Just Put Your Phone On The Bracket Frame And Fix It With Rubber Band, After Connecting The Power Supply And Then Pushwith Hand, It Will Swing And Brush Step Automatically