Features： 1、APPLICABLE SYMPTOMS: Can reduce the symptoms of knee discomfort such as knee inflammation, swelling, stiffness, pain, muscle atrophy, permanent and joint dysfunction. 2、PROMOTE CIRCULATION: Hot compress and gentle vibrations are ideal for reducing pain, and this massager delivers heat directly to the joints, which improving blood flow and helping tissues recover faster. 3、LED TOUCH SCREEN: With a large control led display that allows you to switch the heat and vibration gears and the strength gear during use at will, thus giving you a more comfortable massage experience. 4、INFRARED MASSAGE: The massager combines infrared and hot compress to deeply penetrate the knee and relieve any knee soreness and discomfort. 5、 GIFT: This is a practical and heartfelt gift for your lover, mom and dad, family and friends, for any scenes or celebration, or enjoy it for yourself. Specification： Item Type: Knee massager Material: ABS Built in Battery: Lithium ion battery 3000mah Purpose: To relieve soreness and discomfort for anyone with knee problems Package List： 1 x Knee Massager 1 x Manual 1 x USB Cable