1.Input: DC5V 1A
2.Body-shape design for cervical neck stretcher
3.EVA foam size: 20x15.5x11cm conforms to your cervical
4.Graphene heat pad inside, 65 degree thermostat temperature controller to make sure the safty of heat working.
5.3 levels heat can be choose with red light-High levels; blue light-Middle levels; green light-Low levels 6.Easy to operate buttons on the side of the support.