Time Master Pro plus HOP+ Volumizing GelNew edition Professional Grade Low Frequency Ultrasound with LED is an at home treatment for skin tightening and wrinkle smoothing from the plumping effect of Ultrasound vibrating at 90,000 waves per second to activate skin metabolism and regenerate skin cells. Output is the same frequency as a laser device but the energy is low so it does not damage the skin like the heat from a laser. Time Master PRO works as the ultrasound waves cause a vibration