【Long Battery Life】This heated knee massager comes with a Type-C data cable and a built-in high-capacity battery, providing an average of 12 hours of use on a full charge, depending on your usage mode. (A full charge is recommended for first use). <br>【Perfect Design】This massager features an ergonomic design that fully wraps around the joint, suitable for various body parts. Its compact and lightweight design makes it easy to carry, perfect for travel, allowing you to enjoy a massage anytime, anywhere. It's an ideal choice for home use. <br>【Multi-functional Use】The heated knee massager comes with two adjustable Velcro straps for better fit to different sized massage areas. It can be used not only on the knees but also on the shoulders and elbows, offering multiple uses and simultaneous massage for various areas. <br>【Wireless and Lightweight】This knee pain reliever is very lightweight, allowing you to easily wear it on your knee without any burden. The wireless design frees you from the constraints of cables, making it easy to use at home, while traveling, or in the office, allowing you to enjoy a comfortable massage anytime, anywhere. [Vibration and Heating] This knee massager features 3 vibration speeds and 5 heating modes (104℉-140℉), providing all-around vibration massage for the knee muscles and effectively relieving knee pressure. You can adjust the settings to your comfort level to promote blood circulation and relieve knee pain and swelling.