This mini mesmerizing Plasma Ball puts on quite the lightning show! It is not switch adapted and must be turned on using the built in on/off switch. Touch the globe and the light will follow your finger; making it great way to encourage reaching, touching, and isolating a finger to teach pointing. Measures 4.3" x 3" x 6" inch (Bottom Dia x Ball Dia x Height). Requires 4 AAA batteries, not included, or can be powered by the included USB cord. Direct supervision suggested. Best for children over the age of 10. Use our Jelly Sticky Pad for easy mounting on a smooth surface. This has a touch sensitive plastic globe (instead of breakable glass) for added safety.