Product features: 1. Face beautification and body shaping: It activates various functions between skin and promotes metabolism. 2. Body warming and blood circulation: It warms the human body, consumes excess heat, increases blood oxygen and fluidity. 3. Vitality restoration: It provides deeper adjustment of physiological functions to avoid sub-health state and restore the vitality. 4. Pain relief: It can improve the body\\\'s microcirculation, dredge and activate the meridians, eliminate local pain and inflammation. Instructions for use: 1. Vest features built-in USB port to connect the power bank. 2. Power switch - long press the switch for 3 to 5 seconds. 3. Red light flashes - automatic heating 4. Red light - manual heating, high temperature 5. White light - medium temperature 6. Blue light - low temperature Precautions: Always connect it to the power bank when heating. Power bank is not included in the product. Product list: electric vest * 1 \'