... 2,hub plasma ball light amazing 3,usb plasma ball 4,magic plasma ball ionic ball hub plasma ball,plasma lamp,ionic ball plasma ball,plasma lamp,ionic ... /off switch on the base.Powered directly by a USB portTouch the ball, the light will gather to kiss your fingertips.size ... :3inch, material: ABS+glassUSB HUB plasma ball Easy to use, Connect to free USB socket, slip the swith to "On" position ...