Three in one heating and vibration massage for knees elbows and shoulders Three vibration modes and three heating levels from 50 C (104 F) to 60 C (140 F) deliver targeted relaxation and comfort for knee, elbow, and shoulder areas. Imitation human massage: a vibration core simulates a real kneading surface for a more natural massage feel. Versatile design: not only for knees, but also suitable for elbows and shoulders. Includes an extension belt to fix the pad securely in place. Easy to operate: power on and off with a 3 second long press, then use the temperature button to enable heating. Press the vibration button to turn on vibration and again to adjust vibration intensity. Key benefits and what it solves Relieves joint stiffness and muscle tension with combined heat and vibration, promoting relaxation and comfort in frequently used joints. Provides a realistic kneading sensation to enhance massage effectiveness beyond heat alone. Versatile allinone solution for knees elbows and shoulders, reducing the need for multiple devices. Secure fit during use with an extension belt that stays in place for consistent treatment. Use scenarios After running or intense exercise to soothe knee soreness and stiffness with heat and vibration. At work or after long hours at a desk to relieve shoulder and elbow tension from repetitive movements. During recovery from minor joint strain or overuse, using the heating levels to a comfortable temperature for sustained relief. Specifications and performance Function: heating and vibration massage with three vibration modes and three heating levels (50 C/104 F to 60 C/140 F). Compatibility: designed for knees elbows and shoulders. Design features: vibration core for imitation kneading surface; extension belt for secure placement. Operating method: power on/off with a 3second long press; use temperature button to turn on heating; use vibration button to turn on and adjust vibration intensity.