1.Dual effects —— achieving muscle building and body slimming effectively. 2.Time & effort saving —— lying down for 30 minutes = 30000 times of muscle contraction = 30000 times of sit ups / squats. 4.Quick & remarkable results —— a course of treatment can effectively increase muscle by 16% and reduce fat by 19%. 5.Multi-applicable positions —— precise treatment on abs, arm, shoulder, leg or hips, etc. 6.5 modes each with 12 frequency —— adjust the output frequency according to individual needs. 7.Two or Four handles —— operating simultaneously and effectively, suitable for men & women. 8.Strong cooling system —— greatly improves the stability of energy output.