Features: 1. Adjustable temperature: three temperature control, 5V safety low voltage. 2. Using high-tech materials: made of graphene, the low-voltage ultra-thin thermal film emits far-infrared rays to generate a warming effect, while the heating of the cervical spine is heated, the moxa can penetrate into the neck better, and it is very warm and comfortable. 3. Easy to carry: USB interface for home, errand, travel, party, easy hot compress. 4. Soft and comfortable: skin-friendly flannel fabric is soft to the touch, warm and cold. 5. Free adjustment: elastic and sticker design, easy to use, fixed and compliant. Specification: Certification: CE Material: Composite Material Item Type: Massage & Relaxation Application: NECK Rated voltage: 5V Product material: no velvet Rated power: 4W Applicable people: bow-headed people, cervical discomfort, wealthy bags, etc. Heating temperature: low temperature 35, medium temperature 53, high temperature 70. Product contains: 1x heated neck brace, 1x moxa bag, 1xUSB power control cable.