Silver Oura Ring 3 in the Heritage style. Size 7. Well loved and worn but should have plenty of life left! I upgraded to the 4 and hadn’t experienced issues with the 3 at all. It is scuffed throughout the exterior. I tried to take pictures so you could see. this is all from daily wear and tear. Comes with the original charger and an Oura box (the box is from the 4 but it’s cute if you’re gifting it). Charges within 80 minutes and lasts about 4-5 days. Water resistant up to 100m. Non-allergenic. Withstands various temps so you can bring it into saunas and ice baths. Research-grade sensors accurately measure key health metrics like heart rate, temperature, and more — from day to night. * Red LEDs measure blood oxygen levels while you sleep * Green LEDs monitor heart rate 24/7 * PPG sensors read resting heart rate, heart rate variability, and respiration * NTC sensors monitor your nighttime skin temperature trends