e L Smart & Safe Temperature Control TIDEWE heated jacket features 3 adjustable heat settings with just a simple press of the button, blue means low, white shows medium and the red indicates high. Up to 10 working hours on the low, 5.5 on medium, 3 on high. Our Jacket is equipped with 1 10000mAh 5V battery pack with UL, FCC, RoHS, CE certification. With safe heating system, this jacket keeps you warm and safe at the same time. Warm & Comfortable Fleece TIDEWE Heating jacket adopts soft, breathable and silent fleece material, quickly trapping and making full use of the heat. It provides the long-lasting warmth and a comfortable fit for your outdoor activities.