An electronic free weight with built-in fitness coach, Jammin’ Gym teaches 65 kid-friendly exercises. Think jumping jacks and arm curls. Start simple then progress to more extended routines. But that’s not all. While moving your body to 22 grooving musical tunes, delight in coloring twinkling light shows. Who can resist the urge to get moving? That’s the magic of Jammin’ Gym. Moving to music not only develops listening skills. But also the ability to follow oral directions. Beyond that it boosts brain function. Moreover it enhances balance and coordination. While also building gross motor skills. Ideal for group activities including family fitness time. Measures 3″ diameter x 8″H. Features rubber grip and tether. Requires three AAA batteries, included.