Specification: Heated shoulder pads, warm shoulder and shoulder joints, single shoulder heat, designs fit shoulders, blue S size, perforated breathable, unisex, suitable for left and right shoulders ice pack net with built-in ice No battery, can be adjusted heating, divided into three gears Low 40-60 C Mid-range 55-65 C The highest temperature 65-75 C Charger output voltage: 5V output current: 2A Four-point compression pad for more effective support . Easy to operate, simple and comfortable to wear. High quality diving material, heating gasket, with USB for Android port charging cable Note: The use of power supply problems, resulting in the use of no heating, product heating does not work, need to use 5v2a power supply. Please measure the user's arm circumference and bust circumference before buying to prevent buying the wrong size.Ultra-Comfortable Safe Usage: Crafted from lightweight neoprene fabric, our shoulder heating pads provide superior comfort for both men and women. The 1.5-meter charging cable ensures unrestricted movement during use. A wearing tip to remember: Always wear the shoulder heat wrap over clothing and avoid using it directly on skin or in high temperatures for more than an hour to prevent overheating or burns. Cutting-Edge 4-Corner Compression: Equipped with a revolutionary 4-corner compression mechanism, the USB-powered arm wrap utilizes flexible neoprene padding. Simply stretch the four corners and fasten with the hook and closures for a customized, secure fit that targets your support areas for optimized healing. User-Friendly Temperature Control: With a simple one-touch control panel, operating the shoulder support brace couldn't be easier. Hold down the button for 3 seconds to activate or deactivate, and follow the LED indicators to cycle through three heat settings - red for high heat, blue for medium, and green for low. Adjust the warmth with a mere tap. Cold-Hot Option: Unique among standard shoulder braces, ours comes with a built-in mesh pocket that houses an ice pack for versatile relief. The heated component can warm and relax your muscles, while after 48 hours, switching to a chilled compress helps decrease inflammation and metabolic rate. Integrated Heating Feature: Our state-of-the-art shoulder brace includes a built-in heat pad, delivering warmth that not only soothes your shoulder but actively boosts circulation, thereby addressing a variety of conditions such as shoulder joint pain, rotator cuff injuries, and more.