Adjustable Straps & Secure Fit: The adjustable straps securely hold the heated knee massager in place. The heating pad can be wrapped around and locked onto any knee, and can also extend to the thighs, calves, arms, and legs for a stable fit. <br>Ideal Gift: Our heated knee pads make a wonderful gift for friends and family, providing a versatile solution for different body parts such as legs, knees, elbows, arms, and shoulders. Its ergonomic design and full adjustability ensure optimal comfort for both men and women. <br>3 Massage Modes: The heating module is equipped with a high-precision NTC sensor for accurate and stable temperature control. With two built-in powerful motors, the heated knee pad offers three massage modes for a truly soothing experience. <br>Charging Instructions: Charging requires an adapter with an output power of 5V 2A or higher (not included). Always use the original charging cable to avoid incomplete charging or failure to charge. Do not use the knee massager while charging, as this may damage the heated knee pad. Wireless and Portable: With a built-in 5000mAh rechargeable battery, this heated knee pad for pain relief is lightweight and portable. Whether at home, in the office, or on the go, you can enjoy the warmth of this knee massager anytime, anywhere. The convenient wireless design allows you to enjoy comfortable knee warmth anytime, anywhere. In addition, the touchscreen interface ensures easy operation.