Smart Safety Settings: Press and hold the button on the leg heating pad for 3 seconds to turn it on/off. It defaults to high temperature mode when on. After 5 minutes of inactivity, it will automatically switch to medium temperature mode. To maintain high temperature mode, press the button again until the red light illuminates. 5-in-1 Heating Pad: This rechargeable leg heating pad can be used not only on the knees but also easily covers multiple body parts such as elbows, arms, thighs, and calves. Suitable for both men and women, it can be worn on the left or right leg. The elastic strap design allows for easy size adjustment and provides stable support. Wireless Heating Pad: Compared to traditional plug-in heated knee pads, our portable heating pad features heating and a rechargeable battery, allowing you to enjoy warmth in bed or at work. You can even enjoy warmth while cooking, doing housework, or engaging in outdoor activities. No longer limited to a fixed location, you can easily go wherever you want. 5-Second Rapid Heating: This heated knee pad is equipped with a 10000mAh battery and easily switches between 3 temperature settings, allowing you to enjoy efficient heating at different temperatures. The low temperature setting lasts approximately 5 hours (45/113), the medium temperature setting lasts approximately 4 hours (55/131), and the high temperature setting lasts approximately 3 hours (65/149). User-friendly heating and customizable comfort are no longer luxuries. If you frequently use the heating pad outdoors, we recommend ordering spare batteries from our store (search ASIN: B0D9JVBBF2). A warm gift for a loved one: This heated knee pad is the perfect gift for mom/dad/wife/man/woman. Or have concerns...