【3 LEVELS TEMPERATURES CONTROL】After heating, the scarf has three temperatures: low temperature (106-109℉/41-43℃) can hold heat for 8 hours, and medium temperature (113-122℉/45-50℃) can provide heat for 6 hours. Maximum temperatures (131°F /55°C) can last up to 4 hours of warmth. You can adjust the temperature and position according to your needs to keep the back of your neck warm and comfortable. 【LIGHT AND PRACTICAL】Men's/women's heated scarf with 5V 5000mAh rechargeable battery. Our battery is very small and weighs 100g, which won't make your neck feel heavy. Battery operated heater can work for 4-8 hours. 【SMART HEATING CONTROL】 Built-in sensor has an over temperature protection mechanism to avoid burns. Heat up instantly in 10 seconds. It doesn't make your neck too hot, but keeps a warm temperature. The internal heating element is made of high quality carbon fiber, heating fast, safe, stable and warm.
