Descriptions:Plasma ball for more fun and interaction. This plasma ball is a great decoration for your bedroom, living room, office, or anywhere else! It will create a super cool science-like atmosphere.It's part science, part magic, and all fun! Just slide the switch to the \"ON\" position, this plasma sphere responds to your touch, sending beams of light wherever your fingertips go, very beautiful in the dark, nicely demonstrating beautiful scientific phenomena.If your child is the curious type who is always impressed by all things science, they will be completely fascinated by the electric ball. Help them discover the secrets of plasma in a way that is larger than life and completely safe.The magic plasma lamp will arouse children's curiosity and realize children's scientific imagination.When the ion ball works, a field similar to a point charge is formed around the electrode in the center of the ball. When the ball is touched by hand, the distribution of the electric field and potential around the ball is no longer uniform and symmetrical, so the glow becomes brighter around the fingers, and the merged arc swims and twists along with the hand, and dances with the movement of the finger.Specifications:Material: ABS + glassSize: 8*14 cmColor: BlackPower: USB cable plug-in/4 AAA batteries (not included)Product List:1st plasma ball lamp1st USB cableNotes:Please allow a slight dimension difference due to different manual measurements.Please note that a slight color difference should be acceptable due to the light and.