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Product parameters Product Name: Heating insole (remote control version) Product material: plastic with carbon fiber Charging voltage: 5V1A Charging current: 400mA 7.4WH Working voltage: High gear: 4.2V 547mA 3.85V 505mA Battery capacity: 2100mAh Heating cloth: 10 * 6cm Load impedance: 8 ohms High temperature: 55 degrees Celsius, usage time 4 hours Medium temperature: 50 degrees Celsius, usage time 6 hours Low temperature: 40 degrees Celsius, usage time 9 hours Packaging list: 1.charging cable 2.trailers 3.Remote control 4.Heating insoles 5.Instruction manual Product certification: FCC/CE/ROHS 1. Improving cold feet, carbon fiber materials generate heat, effectively stimulating blood circulation in the feet, and helping to resist cold weather! 2. Fast charging time, 4 hours of charging, 10 hours of use. 3. Suitable for outdoor workers, essential for travel in harsh winter, elderly, and those who are cold and afraid of the cold. Usage Button operation on insoles 1. Before inserting the insole, press and hold the power button for 3 seconds. The LED indicator light will turn on, and the red light will turn on to indicate high temperature. 2. Press again, the LED blue light will light up, indicating medium temperature. 3. Press again, the LED will light up green, indicating low temperature. Press and hold to cycle the red, blue, and green lights, adjust the high, medium, and low temperature levels, and press and hold for three seconds to shut down.