Wireless and portable, long-lasting battery life, get rid of pain. The built-in 5000mAh battery and wireless design allow for easy use anytime, anywhere. Whether it's a long workday, post-workout relaxation, or pain relief, you can break free from the constraints of a power outlet. Adjustable straps for a secure fit and multi-functionality. The adjustable straps and flexible design allow you to use the massager not only on your knees, but also on your shoulders, elbows, calves, and arms. During use, it stays firmly in place, precisely massaging the areas you need. Ideal gift, this heated knee pad is a great choice for gifting to friends and family, providing a multi-functional solution for different body parts such as legs, knees, elbows, arms, and shoulders. Its ergonomic design and full adjustability ensure optimal comfort for both male and female users. Charging instructions: A 5V 2A or higher output adapter (not included) is required for charging. Please use only our original charging cable to avoid incomplete charging or failure to charge. Do not use the knee massager while charging, as this may damage the knee heating pad. Experience the all-new 2025 version: double the heating area for soothing your knees. Five heating modes are available, with a temperature range from 45C to 65C (113F to 149F). Note: To switch between temperature display units (C and F), press and hold the heating and vibration buttons simultaneously for 3 seconds. Avoid direct with exposed skin and exercise extra caution when selecting higher heating levels.