WITH REMOTE CONTROL USB HEATED BRANDZEL Product parameters Material: carbon fiber plastic Charging Voltage: 5V1A Charging Current: 400mA 7.4WH Discharge current: 4.2V 547mA; 3.85V 505mA Battery capacity: 2100 mAh Heating fabric: 10*6 cm Load Impedance: 8 ohms Working discharge time: High temperature 100%: 4 hours and 30 minutes, about 55 degrees Average temperature 75%: 6 hours, about 50 degrees Low temperature 40%: 9 hours, about 40 degrees Improve foot coolness, carbon fiber material heats up, effectively stimulates blood circulation in the feet and helps resist cold weather! Fast charging time, 4 hours charging time, 10 hours use. Suitable for people who work outdoors, they have to travel in the harsh winter and the elderly and afraid of the cold. Support button on insert Before inserting the insert, press and hold the power button for 3 seconds, the LED indicator will light up and the red light will light up, indicating the high temperature. Press it again and the blue LED will light up, indicating the average temperature. Press it again and the green LED will light up, indicating a low temperature. Click to switch red, blue and green lights, adjust on three high, medium and low temperature gears, then press and hold for three seconds to turn off.