1.Three Heating Levels & Rapid Heating Featuring three adjustable heating levels (High 140-150°F, Medium 122-133°F, Low 104-113°F), our heated socks allow you to tailor the warmth to your needs with a simple press of the button. 2.The socks heat up rapidly Reaching your desired temperature within 30 seconds after activation, making them perfect for sudden cold weather. Whether you're skiing, hiking, or just going about your day, the fast heating feature ensures warmth when you need it most. 3. 360° Full Foot Heating Coverage Our heated socks utilize advanced infrared heating elements strategically placed around the forefoot and toe areas. These elements deliver up to 140°F (60°C) of consistent warmth, promoting blood circulation and ensuring that your entire foot stays warm, even in the coldest environments. This full-coverage heating design is ideal for those with chronically cold feet, providing comfort during activities like skiing, fishing, or winter hiking. 4. Long-Lasting Battery Performance Powered by 7.4V 2200mAh rechargeable lithium polymer batteries, these heated socks provide up to 8 hours of continuous warmth on a single charge (low setting). The fast-charging technology allows the batteries to be fully charged in just 3.5 hours via dual USB ports, making them ideal for extended outdoor use. Whether you're embarking on a day-long adventure or tackling a full workday in cold weather, these socks will keep your feet comfortably warm.