1、NOTE: IT IS ONLY SUITABLE FOR 5V ADAPTERS OR 5V CHARGERS, OTHERWISE IT WILL NOT WORK 2、Using a voltage other than 5V will cause it to not work or burn.【NOTE: POWER BANK NOT INCLUDED IN THE PACKAGE!!!】 3、Made of lightweight, breathable neoprene; the fashion blue color shoulder brace is fully adjustable to fit most people's body size. 4、Four-corner compression for more tight-fitting protection, 5、We will replace or money back if the shoulder support for left or right foot has quality problem Doact new electric shawl blue heating shoulders breathable punching large size regardless of left and right With 1.5M USB Androids port charging cable, no battery, can be adjusted heating, divided into three gears Low 45-50°C Mid-range 50-55 ° C The highest temperature 55-65 ° C Charger output voltage: 5V output current: 1A; Four-point compression pad for more effective support and pain relief on the shoulder. Easy to operate, simple and comfortable to wear. High quality diving material, heating gasket, with 1.5M USB Androids port charging cable Product List: Heating Shoulder*1 1.5M USB Androids port charging cable*1 Instruction manual*1 Large shoulder pad body size: 36cm*33cm*41cm Large adjustment belt size: 5*80cm Switch Mode: Red-highest temp (65℃ to 75℃) Blue-medium temp (55℃ to 65℃) Green-lowest temp (40℃ to 60℃) Using a voltage other than 5V will cause it to not work or burn.