FeatureThis USB powered plasma ball brings light to the palm of your hand!Powered by your computer''s USB Port or (4) AAA batteries(battery not included)Size: 3.3" / 9cm， Color: Black base and clear ballNote: Pictures for reference only， actual performance may vary depending on usage. Talk to your plasma ball， it''s less weird than you think， and watch the light react.Touch the ball with your hands for even more cool effects.Place the plasma ball on your desk， on the dashboard of your car， or in a noticeable location at your next party.Everyone will be mystified by the light power you harness in your plasma ball.