-Need to be switched on electricity for 20 minutes just each time, can also keep on in the cold winter for around 1-2 hours.
-Cure arthritis, lumbago, and headache, cervical vertebra disease, chilblains...etc. to the prevention and the assistance, all have an obvious function.
-This product contain automatic control temperature and automatic dual insurance of the power failure fuse, prevent from once heating high, protect skin