Features: 1. Multifunctional heating vibration massage knee pads, red light heating + vibration massage combination, gentle care of your shoulders, elbows and knees. 2.  3. It can be used for warmth and hot compress therapy, which can effectively relieve muscle soreness and cramps, relax muscles, reduce stress, relieve fatigue, and promote blood circulation. 4.  5. USB charging: The built-in 5000mAh large-capacity rechargeable battery allows you to enjoy a comfortable massage anytime, anywhere. 6. Equipped with digital display controller, touch screen key design, panel display temperature and gear, you can use the controller to control the temperature and vibration mode, the operation is simple and convenient. 7. Anti-accidental touch function: When you are using the product, you can turn on the anti-accidental touch mode to lock the control panel to avoid accidentally touching the keys.   Specifications: Material: diving material color: blue Working voltage: 5V Working current (heating the highest grade): 1850mA Charging time: 2-3H Battery capacity: 5000mAh Battery life: Massage (top grade): 14.2h Heating (highest grade): 140-160Min Massage + heating (highest grade): 100-120Min Product net weight: 320g Knee pads: 72*23cm Long strap: 67*5cm Short strap: 60*5cm Packing size: 24*6*15cm