instructionsIt can be plugged in via USB (with a USB data cable included with shipment) or equipped with 4 No. 7 batteries (not included with shipment)The fluctuation switch will turn on the lightCan be equipped with an adapter to convert power modesThe USB power supply has a high-strength glass shell and a thin inert gas filled inside the ball. There is a black spherical electrode in the center of the glass ball. At the bottom of the ball, there is a vibrating circuit board that converts 5V low-voltage DC power into high-voltage high-frequency voltage through a power converter and applies it to the electrodes. After being powered on, the arc formed by the electrode and high voltage exciting inert gas generates a beam of light, so the light produced is like some radiating glow, colorful and radiant, very beautiful in the dark.When an ion sphere works, a field resembling a point charge is formed around the electrode in the center of the sphere. When the hand (connected to the earth) touches the ball, the electric field and potential distribution around the ball is no longer uniform and symmetrical, so the glow around the fingers becomes brighter, and the arc generated moves and twists along with the touch of the hand, dancing with the movement of the fingers.