Quick heating: The USB belt electric heating uses a metal heating , which can quickly heat up and provide a warm and comfortable . Adjustable temperature: With temperature adjustment function, suitable temperature gears can be selected according to needs to meet the needs of different users. USB charging: It is convenient to use and can be charged through USB suitable for various charging devices. Comfortable : The belt pad conforms to ergonomic principle, conforms to thecurve of the waist, and is comfortable and not easy to slide. protections: Equipped with overheating protections device, it will automatically cut off power when the temperature is too high, ensuring safe use.