Slim your waist, hips and thighs with the fun Gym Massager. It gives you a low-impact workout that slims your silhouette in just 20 days and improves your balance in 8 days. Acupressure nubs on the footpads energize your entire body while you work out. A digital display shows calories and fat burned. Holds up to 330 lbs. Requires 1 button-cell battery (not included).