This mini mesmerizing Plasma Ball puts on quite the lightning show! It has been switch adapted to accept a standard 3.5mm switch (sold separately), or can be turned on using the build in on/off switch. Activate your switch and the show starts, release your switch and it stops. 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 5.75 inches tall x 4 inches wide. Requires 4 AAA batteries, not included. Direct supervision suggested. Best for children over the age of 10. Use our Jelly Sticky Pad for easy mounting on a smooth surface.