Come and see our amazing products! Built-in far-infrared graphene heating sheet, heating of far-infrared heating sheet. Far infrared rays penetrate the skin and warm the neck. Three-speed temperature control switch to adjust the temperature control at will, one key to turn on, have warm happiness anytime, anywhere. Red high temperature 55 degree C, Blue medium temperature 48 degree C, Green low temperature 42 degree C. The intelligent constant temperature heating switch combined with the temperature sensor probe can detect the temperature of the heating film and accurately control the warmth without being hot. Safe voltage warm your neck. massage version also available with higher prices list. Pls confirm further with us if any query about packing info, inventory status and time schedule.