" Product Name: Heated Insole (Remote Control) Material: Plastic and Carbon Fiber Product Size (cm): 26*9*5cm Weight (kg): Color box packaging weight: 372g, without color box packaging weight: 297g Packing Size (cm): 5*11*32cm Packing Size: 47*28*39cm 22pcs/8.1kg Voltage: 3.0V-4.2V Battery Capacity: 2100mAh Input: AC/100-240V40-60Hz Output: DC/4.2V-5V 500*2 High temperature: 55 degrees Usage time: 4 hours Medium temperature: 50 degrees, usage time 6 hours Low temperature: 40 degrees, usage time 10 hours Function: 1. Improve the coldness of the feet, the carbon fiber material warms up, effectively stimulates the blood circulation of the feet and helps to resist the cold! 2. Fast charging time, 4 hours of charging, 10 hours of use. 3. It is suitable for people working outdoors, necessary for traveling in harsh winter, and for the elderly, cold and afraid of cold. Usage: Button operation on the insole: 1. Before putting on the insole, press and hold the switch for 3 seconds, the LED