This phone swing device is designed to automatically record steps, making it a great tool for those who want to increase their physical activity. It is suitable for most phones under 6.4 inches and can be used as a mobile phone holder. The device is made of high-quality metal and plastic, ensuring a smooth and quiet operation. It can be powered by USB charging or 4 AA batteries and is easy to install and use. The device can hold two phones, one on the front and one on the back, making it a convenient option for those who need to use multiple phones at the same time.