Smart Ring for Women & Men, IP68 Waterproof Fitness Tracker Ring with Heart Rate, Blood Oxygen & Sleep Monitor, Health Tracker Ring Compatible with iOS & Android, No Subscription Fee #8
A lightweight, subscription-free smart ring from J-BRAUV that tracks heart rate, SpO2, blood pressure, sleep, and daily activity—with IP68 waterproofing, multi-sport modes, and a charging case for extended runtime.