... frequency:50HZ--60HZPacking material: Aluminium alloy case Ultrasonic Beauty Machine acting on the body's skin, to better promote ... the original skin's rosy, delicate.Ultrasonic Beauty Machine three characteristics: deep cleansing, facial movement, thermal effects (up to relieve ... skin fatigue ,15-20 minutes is the optimum time.Machine fittings:3 probes(respectively, aluminum, stainless steel,titanium) ...