1. USB Charging Design: The adjustable electric shoulder massager features a USB charging port, allowing you to use it anytime, whether working or sleeping. Once fully charged, the shoulder massager for women/men can operate for up to 2 hours. 2. 3 Adjustable Heating Vibration Modes: The heated shoulder wrap offers three vibration and heating modes. **Lowest Temperature Range**: 40°C/104°F to 50°C/122°F. **Medium Temperature Range**: 50°C/122°F to 60°C/140°F. ** Temperature Range**: 60°C/140°F to 65°C/167°F. *Warm Tip: For performance, fully charge the shoulder heating pad before first use.* 3. Adjustable Heated Shoulder Massager: Our shoulder massager provides three vibration and heating modes—low, medium, and —to accommodate different temperature and intensity preferences. This heated shoulder brace delivers soothing heat therapy for your shoulders. 4. **Fits Both Left Right Shoulders**: The heated shoulder massager is suitable for men and women, with two sizes available for an ergonomic fit. Designed for portability, it contours to the shoulder's natural shape for better comfort. The heated shoulder support includes an adjustable strap, accommodating a chest circumference of 27 to 55 inches and an arm circumference of 9 to 16 inches. It fits snugly in all areas, providing effective relief for all users.