Features: -The built-in airbag simulates hand squeezing to achieve 360° coverage, deeply massage the muscles, promote blood circulation in the legs, and relieve pain. -There are 2 modes, including massaging different parts of the leg, thigh, calf or foot, with 4 intensities and 3 levels of heating. -Made of mesh fabric, breathable and comfortable, with fasteners, easily adjusted to fit different people's legs. -With 15-minute automatic closing safety function to avoid overuse due to forgetting to close. -With simple button control, high-definition large screen displays temperature and strength, easy to use. Specification: Color: gray Battery capacity: 1800mAh Rated power: 7.5W .