[On/Off Button & Mode Selection] Our jitter mouse features a built-in on/off button and a mode selection button. This simplifies operation and greatly improves the user experience. No need to repeatedly plug and unplug the mouse, and your USB port is protected. [Indicator Light & Protection] The jitter mouse has a protective cover for the USB port, which protects it from damage and makes it easy to carry. In addition, an indicator light shows you when the device is active. [Multi-Track & Memory Function] This mouse pointer supports multiple tracks, three of which reflect cursor movements at varying speeds and random trajectories. It also has a memory function, which returns it to its original position the next time you turn it on. [Driver Required] No driver is required to move the mouse. Simply plug it into your computer and hold down the power button. The cursor will move automatically. No tedious software installation is required, making it easy to use.