* Different functions with 1 level speed of vibrating, 3 levels speed of tapping, the temperature of the surface up to 50°C. * With LED lights makes unit looks nice. * Auto circulation for 15 minutes and satety equipment for PTC heater which can deeply improve the blood smooth flow. * Revitalize tissues and enhance energy, the PTC can heat for 30 minutes. * Activate blood circulation and metabolism. * Got GS & UL approval.