Description 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 bodys microcirculation dredge and activate the meridians eliminate local pain and inflammation 5 USB Interface charging Power bank is NOT Included Instruction for use 1 Waistcoat 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 heating4 Red light manual heating high temperature5 White light medium temperature6 Blue light low temperature Note Our sizes are Chinese sizes which are usually smaller than USEurope sizes Please choose your size according to size chart and we suggest one sizes bigger to match USEU size Product Included 1 X Electric Heated Waistcoat