Targeted Heat Therapy: Graphene heating technology and release far-infrared rays promotes blood circulation to loosen and relax tense muscles. First Turn on the power bank, connect the USB in the scarf, and then press 3s button to switch on the scarf. not include power bankFast heat and Auto off: Heating up fast and offers 3 heat settings.Use it without Socket: Different from other heat pads restricted by plugs, neck heating pad is powered by 5V 5000mAh power bank that charges the scarf through a USB connection. Because of the excellent portability, you can carry it for commuting, hiking, and travel.Soft and Comfy Materials: Not only is the heated scarf easy to wear, but the breathable and ultra-light material makes it comfortable against the skin. Be sure to hand-wash at a low temperature and remove the battery before washing.One Fits All: The unisex design, both men and women can wear this scarf and easily suit it with your coat. As the weather gets colder, muscle aches and pains are multiplied. Give this to someone who's always chilly and keep him warm in the cold winter.