Ideal for those people who dont have the time or energy to get your recommended steps in. The swinging cradle is useful if you are doing some corporate step challenges. The phone shaker simulates steps in Google Fit or Apple Health and it fits any IOS and android device, like your iphone, Google pixel, Samsung, or smart watches. It can earn 8700 steps in an hour(2.5 miles approx.) without ever taking one and it is good for hatching eggs in Pokmon Go and cheating your way to 10,000 steps in a short time. The step counter device is a portable and saving-space device and you can place it on your office desk or night table. This step counter is a plug and play device which can be powered by power bank or laptop with the USB cable, or AA batteries. NOTE: It cannot be used with 9V/12V fast charger.