*230V~50Hz 500Watt *Smart buttons for function choices. *PTC Heating cool-water and keep warm; *Time setting function; *Bubble function; *Casing design for medicinal materials; *Motor-driven TAIJI massager ; *LED display for temperature and time adjusting ; *Acupuncture nodes design on bottom; *90°rotation Lift-up ring design; *Drain filter and Drain-pipe design; *Anti-splash board; *Full cover design for sauna at feet; *4-wheel design at bottom for easy moving;