Condition: 100% Brand New Item Type: Heating Vest Material: Chemical fiber blend Color: Black Optional Size: M, L, XL, XXL, XXXL Features: USB heating. Can be cleaned manually or by machine. Power supply: mobile power supply, please take out the mobile power supply when cleaning, the mobile power supply should be supplied by yourself. Slim, soft, light and breathable. For men and women. Mobile power supply is not included. Description: 1. Unplug the USB plug. 2. Access to mobile charging power supply. 3. Hold the chest temperature control output switch for 3 seconds. 4. Press the chest temperature control switch for 3 seconds to begin preheating, then adjust the heat to a moderate temperature when a portable power supply is needed. 5. Size: Size ShouderBust Length M35cm / 13.8in92cm / 36.2in58cm / 22.8in L37cm / 14.6in96cm / 37.8in60cm / 23.6in XL39cm / 15.4in104cm / 40.9in62cm / 24.4in XXL41cm / 16.1in108cm / 42.5in64cm / 25.2in XXXL43cm / 16.9in112cm / 44.1in66cm / 26in Error1cm2cm1cm 6. Manually adjust to third gear, warm gear temperature is 45 degrees Celsius, comfortable gear temperature is 35 degrees Celsius, energy saving gear temperature is 25 degrees Celsius. 7. Hold down the chest temperature control switch for three seconds, then turn off the lights to stop the heating .18 Heating zones and 3 gears temperature controls, five carbon fiber heating elements generate heat in the waist, abdomen and upper back. One click for 3 heating settings. With the smart heating system, the temperature ranges from 40/104H to 70/158H. 2USB charging, easy to charge.You need to connect to a 5V2A power supply (this product does not include a power supply).The portable power supply needs to be removed during cleaning. 3Safety and healthy, 5V of far infrared heating is far lower than 36V of human safety voltage. Stable heat and human safety voltage, better warmth of the belly and waist. 4Large?area heating, electric heating vest has eight built?in heaters, which have the function of blood circulation and keeping warm. Heating the stomach, back, waist and abdomen, but also promote blood circulation. 5Wide range of applications, wonderful for outdoor skiing, winter fishing, mountain climbing, biking, camping, snow hiking, hunting, winter streets, daily offices, etc. 1 x Heating Vest&nbsp 1 x Manual&nbsp