• HEAT ON-DEMAND:Just connect the battery pack, turn it on and then adjust the temperature(high, medium, low) with a press of the button.
  • 4 carbon fiber heating elements generate heat across your core body areas (left & right front stomach, upper-back, and collar)
  • It heated up quickly in 5 seconds, with noticeable warmth on the back, waist, and neck.
  • It can last around 10 hours on low or 4.5 hours on high.
  • COMPLETE PROTECTION:Smart 12V 2A 16000mAh delicated power bank, heated the vest fastly. All the heated vest and the battery built with multiple circuit protection automatic low-charging system, Effectively preventing battery(over-charging, short-circuit, high-temperature, and surge protection), and high-quality, fire-resistant construction, safety to use.