Infrared 0288B energy king massager and fat burner alleviate ache caused by tiredness and rheumatism, clean away tic on the shoulder caused by uncomfortable sleeping, alleviate ache caused by uncomfortable blood circulation, 38cm massage stick length, 50-60HZ frequency, minimum 2600 R.P.M. and highest 3200 R.P.M. vibration frequency, 220v power supply.