This is a gen 3 Oura Ring, size 10. It works great and I love it so much. I lost some weight and the ring is a little big for my finger. It definitely has wear and tear, but to be honest that happened so quickly, even when I was careful. You can’t tell unless you look closely, but if you want more photos let me know. I have only had this since June, so the battery life is great, just hoping it finds a new home that loves it as much as I do!