1. 3 levels of hot compress (40°/45°/50°), 4 modes (comprehensive, tapping, kneading, pressing mode), 9 levels of intensity adjustment, accurately respond to various discomforts in the neck, simulate real-life massage techniques, and deeply care for the cervical spine stiff, relaxed cervical muscles 2. Constant temperature hot compress, EMS double pulse, comfortable to wear; 3. Neck neck protection hot compress massage, light body, no feeling of wearing, relieve neck discomfort, care for your cervical spine 4. Nine core configurations, EMS double-pulse massage, customized for people with cervical spine discomfort, double-pulse technology, lightweight and good products, long-lasting battery life, massage event level, 4 massage modes, 9 levels of intensity adjustment, 3 levels of hot compress for 5 seconds , pendant hanging neck 5. U-shaped curved surface design, in line with ergonomic design, comfortable and comfortable to carry