Neck Pro (such as COFO Neck Pro) can soothe the stress and fatigue of the day by warming and relaxing the muscles in your neck and shoulders, or by cooling them. ✨ Specifically, it has the effect of warming the neck area with patented heating technology and relieving heat with its cooling function. It is also lightweight and easy to carry, making it suitable for long hours of use. Product manual is available at the following link: https://cdn.shopify.com/s/files/1/0551/2632/7355/files/V2_Neck_Pro_JP_EN_CN_Mass_20241221.pdf?v=1740551720