Oura Ring Gen 3 + Charger This ring tracks a large set of health data to include: sleep (every stage - REM, deep sleep, light sleep), resting heart rate, temperature fluctuations, activity level, calories burned, steps, restfulness, stress levels, and much more! Style: Heritage Size: 7 Finish: Silver Condition: Small surface scratches from normal wear, can most likely be buffed out if you prefer. Works great! Original charger included