Oura Smart Ring 4 - Gold Size 8 - Sleep, Heart Rate and Fitness Tracking

Smart ring that tracks your sleep patterns, heart rate, and daily activity. You need to size it properly with their kit before ordering since it's not a standard fit. - Monitors sleep quality, duration, and stages - Continuous heart rate tracking throughout the day - Fitness and activity tracking - 8-day battery life per charge - Works with iOS and Android devices - Gold finish - Size 8 (requires individual sizing) - Advanced health metrics including resting heart rate, heart rate variability, and body temperature trends - Wearable design sits on your finger - Daily readiness score based on recovery and activity - Water resistant construction - Syncs wirelessly to companion mobile app - Passive monitoring requires no manual input