Electric heated socks are a practical solution for those needing extra warmth on cold days. The product features three temperature settings easily adjustable via a power button. The socks are powered by included lithium-polymer batteries and a special adapter, ensuring convenience without the need for a constant power source. This product is intended for home use and is not for diagnostic or therapeutic purposes. Product specifications: • Color: black and gray • Voltage: 3.7V-5V • Temperature range: 40-60 degrees Celsius • Power supply: lithium-polymer batteries 4000mAh, 14.8Wh • Temperature control: three levels with LED indicator • Included: socks, two batteries, charging cable USB • User manual in English