Oura Ring Heritage Gold size 7 Gen 3. Ring was used for less than a month. Everything works perfectly fine but I did notice what seems to possibly be an inner crack as shown on images. I reached out to oura and they can’t identify what it is and said I can continue to use the ring as usual since it’s not cracked on the outer side. I showered with it daily even after noticing and never had issues. Battery lasts about 5 days. Comes with box, box is slightly damaged. NO CHARGER. Charger can be purchased on amazon. Keep in mind when purchasing charger, it has to be charger for size 7!