Amazon Smart Ring, Silver, SIZE 7

Comes with Charging Magnetic Case, USB-C Charging Cord and Size 7 Chrome/Silver Ring. Smart Ring is an affordable, subscription-free wearable that tracks 24/7 health metrics, including heart rate, blood oxygen (SpO2), sleep stages, and daily activity. Weighing roughly 3.5g with a 5ATM waterproof rating, it syncs directly with the Da Rings app on iOS and Android. EUC, Free Shipping! HEALTH IS WEALTH