Gen 3. Sleek black ring by Oura. Modern and stylish design. Only one year old Great condition Size: 9 Meant to fit on pointer finger Comes with charger puck, cord, and plug Sleep, Readiness & Activity scores are just the beginning. Members also get: In-depth sleep analysis every morning Personalized health insights & recommendations Live & accurate heart rate monitoring Temperature trend monitoring as a tool to predict periods and to identify early signs of sickness