Protect your heart and blood vessels with the COZING cold laser therapy watch. The 650nm semiconductor laser reduces high blood viscosity, a major risk factor for stroke and coronary heart disease. By improving red blood cell deformability and promoting microcirculation, this device supports overall cardiovascular health. It also comes with ear and nasal applicators for comprehensive treatment. Lightweight and rechargeable, its perfect for seniors and anyone with a sedentary lifestyle. Use it at home, at work, or while traveling.