Shoulder Pain Relief: builtin shoulder heating pad warms the shoulder to promote blood circulation, helping relieve pain from frozen shoulder, torn rotator cuff, sprain, tendonitis, paralysis, strain, stiffness or soreness. It can relax shoulder muscles and support faster recovery. Shoulder Support Brace with Heat: has three fixed heating modes for therapy. Low: 40 C to 50 C (104 F to 122 F). Medium: 50 C to 60 C (122 F to 140 F). : 60 C to 70 C (140 F to 158 F). USB Powered and Portable: comes with a USB cable and can be powered by any 5V USB port, such as a power bank (not included). Use at home, in the office, in the car, or on the go. Suitable for relief during driving, working, gardening, housework, studying, exercising, playing, or walking. Fit for Both Left and Right Shoulder: adjustable size with chest circumference 2755 inches and arm circumference 918 inches. Includes an extension strap to address size incompatibility. Suitable for men and women. Use Scenarios: ideal for resting at home or watching TV, for desk work or office tasks, and during driving or commuting to manage shoulder discomfort on the move.