Fast Heating and Overwhelming Heating Area: This electric heated vest received high acclaim.Using the latest heat generating technology, the heater in the abdominal area is longer and the overall heating area is almost twice as long as conventional products.Achieves the strongest heat generating area in the industry. Turn on the power and generate heat in about 5 seconds. The heat conducts quickly and instantly warms your bodyThe lining is made of aluminum for 5% more heat retention and it achieves excellent heat generation so you can enjoy it even in the middle of winter. Large Capacity Battery, Improved Functionality: The electric heated vest has a specially designed mobile power supply, comes with a wake up function, an improved 16,000 mAh large capacity, a DC port, and a 3 A high output, making it a smaller than batteries in the same class.In addition, it is compact yet can be used continuously for up to 14.5 hours and can be easily stored in the storage pocket of electric heated wear.Plus, it is PSE certified so you can use it with confidence.Continuous operation time: High (approx. 5 hours), Medium (approx. 7.5 hours), Low (approx. 11.5 hours).Front-only heat generation (approx. 14.5 hours). Front and Rear Independent Control / Max 140°F (60°C): The belly, neck and back of the vest can be independently operated by 2 switches. Not only can you use it as a pocket with a heater, it is also for anyone who wants to warm their stomach.Also, with 3 levels of temperature adjustment, you can easily switch between strong (approx. 142°F (60°C)), medium (approx. 122°F (50°C)), and low (approx. 104°F (40°C)) to suit your preference and situation. Water Repellent, Lightweight and Easy to Clean: High performance thermal wear with superior water repellent outer material that reduces stress from getting wet, making it resistant not only to condensation but also to small stains.This heated vest has a moderate amount of filling that does not cause bloating. It weighs only 12.3 oz (350 g), so it does not strain your body and can be worn with other clothing.In addition, if it gets dirty during outdoor use or outdoor work, it can be machine or hand washed and it is easy to clean. Cold Protection / Package Contents: Great for everyday wear in extreme cold winters, as well as for protecting against the cold for people who work in environments where heating is not available.You can work comfortably in a warm environment and increase your work efficiency.The package includes 1 electric heating vest, 1 battery (output is 5 V, 3 A / approx. 10.4 oz (298 g)), charging cable x 1, instruction manual (English language not guaranteed) x 1 (Note: Please remove the battery before washing).