Oura Ring 4 - BNIB - Gold sz 7

Oura Ring 4 Gold Size 7 BNIB - Sealed on both sides  ouraring.com/store/rings/oura-ring-4/gold  From website: Track over 50 health and wellness metrics, and get personalized insights into your sleep, activity, stress, metabolic, heart health, and women’s health. With innovative, AI-powered tools like Oura Advisor, get exclusive access to actionable insights that become increasingly tailored over time.  What's Included Oura Ring 4 Size-specific charger USB-C cable  Tech Specifications Sensors Red and infrared LEDs measure blood oxygen levels Green and infrared LEDs alternate to measure heart rate and heart rate variability 24/7 and respiration rate Digital sensor measures temperature trends Accelerometer tracks movement and activity 24/7 Compatibility Oura App is available in English, Finnish, Japanese, German, French, Spanish, Italian, Norwegian, Swedish, Czech, Dutch, and Danish Supports metric and imperial units of measurement Integrates with 40+ apps Available on iOS and Android Weight and Dimensions Width: 7.90mm Thickness: 2.88mm Weight: 3.3 to 5.2 grams (depending on Oura Ring size) Battery Life 5-8 days of battery life** Typically charges in 20-80 minutes, depending on battery level Quality Materials Non-allergenic titanium on inner & outer surfaces Seamless titanium interior Water resistant up to 100m/328 ft Minor scratches from regular wear are normal Connectivity Bluetooth Low Energy Automatic firmware updates via Oura App EMF-safe Supports airplane mode FCC-cert