1. Warm heat-generating vest, supports 5V/7.4V power bank power supply (power bank not included) 2. Long press the switch for about 3 seconds to quickly heat up and power supply, and short press to switch gears, three-speed constant temperature (45 degrees Celsius/55 degrees Celsius/65 degrees Celsius) can be adjusted at will 3. 15 heating zones, independent 3 controls (front zone + front and rear neck and shoulder zone + back zone), heating zones can be controlled separately 4. Composite fiber heating wire to avoid burns caused by overheating 5. Soft cotton touch, delicate and skin-friendly, not easy to fade 6. Washable like ordinary clothes, machine or hand washable (please wash gently when washing to extend the service life of the heating plate) 7. Material: Imitation silk cotton filling + polyester fiber
