Oura Ring Smart Ring, Fourth Edition A ring that is currently one of the strongest rings on the market. It's smart and eliminates the need for a smartwatch and its uncomfortable appearance. A ring that is worn and tracks steps, heart rate, health, sleep, anxiety, stress, and many other things from your body. And if you are a girl, it also benefits you greatly in terms of your monthly cycle. Color: Rose Gold Size: 8 Usage duration: 7 months The color is changeable by putting a cover on it from Amazon in many colors. ❌❌❌I don't have refrigerators or air conditioners for sale. Don't bother me, you're annoying us ❌❌❌