1、3D RESONANCE TECHNOLOGY: 3 levels of strength massage to reduce knee soreness and high frequency micro vibration massage to gradually relax stiff muscles. 3D knee wrap massage accurately massages important parts of joints and awakens joint muscles. 2、5 GRADE HEATING: 5 levels of hot compress temperature, relieve joint pain. The heated knee bracket generates heat in large area through NTC temperature control, and the heat transfer is isothermal and isothermal. The heat sensation of 40~60℃ penetrates deep into the subcutaneous tissue and releases pressure deep down. 3、POINT DESIGN: Point design, massage more targeted, far infrared deep hot compress heat around the knee, release the knee shoulder neck pressure. 4、PERFECT FIT: The heating pad is 360 degree seamless fit and can be used for all leg types. The high elasticity and flexible fabric greatly improves the fit and comfort. 5、MULTI JOINT APPLICATION: Long endurance, continuous knee care, scientific recommendations of 15 minutes a day, high definition screen, simplified buttons, adapt to household elbow joints, knees and other multiple joints.Item Type: Heating Knee Massager Battery Type: Lithium Ion Battery Battery Capacity: 1000mAh (built in) Massage Mode: 3 kinds Temperature Range: 5 Gear（40°C ~ 45°C ~ 50°C ~ 55°C ~ 60°C） Function: 3D vibration, constant temperature hot compress Efficacy: Relieve joint pain, knee soreness, exercise fatigue, etc Operating Time: The heating knee massager is powered on for 20 minutes by default. If the heating temperature or vibration mode is switched within 20 minutes, and will be powered off at that time. All functions will be suspended, and the lights will be turned off.1 x Knee Massager 1 x Host 1 x USB Cable