【Adjustable Fit for Both Shoulders】Versatile heated shoulder strap accommodates chest circumferences of 27-55 inches and arm circumferences of 9-16 inches, ensuring comfort for all body types. Suitable for both men and women. 【3 Heating and Vibration Modes】Features three temperature settings: Low (40℃-50℃/104℉-122℉), Medium (50℃-60℃/122℉-140℉), and High (60℃-75℃/140℉-167℉), each with corresponding vibration intensities. 【LED Display with Battery Warning】LED screen shows current temperature for optimal comfort selection. Low battery alert (below 5%) with audible reminder helps manage usage time effectively. 【USB Rechargeable Design】Wireless shoulder strap with USB charging capability allows for convenient use anytime, whether at work or during sleep, providing muscle relaxation and soothing heat therapy. 【Premium Comfort and Support】Constructed with high-quality neoprene material for enhanced comfort, stable support, and optimal compression, making it an ideal gift for various occasions. Specifications: Material: Neoprene Adjustable Size: 27-55 inches (chest), 9-16 inches (arm) Temperature Range: 40℃-75℃ (104℉-167℉) Heating Modes: 3 levels Vibration Modes: 3 levels Display: LED for temperature and battery status Charging: USB rechargeable Suitable for: Left and right shoulders