Ultrahuman Ring AIR Smart Ring Size 10, Matte GreyGet tailor made insights and alerts to help you make better choices in real time. Equipped with a PPG sensor, you can stay on top of your body's vitals such as heart rate, heart rate variability, blood oxygen saturation, temperature and more. Armed with a 6 axis motion sensor, it captures the intracacies of your body's movements with unmatched precision. Hypoallergenic smooth inner shell, Ring AIR curates an unmatches comfort level, enhancing your