Oura Ring 4: Rose Gold, Size 7, New with Box

* New With Box (unopened/never used) * Oura Ring, Generation 4, Size 7 — replacement ring, still sealed in original packaging * Retails for $499. Limited-edition Rose Gold colorway sold out online.  Original description: Oura Ring 4 brings you closer to what matters most — your health. With an updated all-titanium design, this smart ring features Smart Sensing, a new sensing platform that doesn’t just measure your biometrics but also adapts to you. It provides insights into over 50 biometrics including sleep, readiness, activity, heart health, stress, metabolic health and women’s health. It’s also designed for 24/7 wear — the updated design of Oura Ring 4 is more comfortable, fits better than ever, and is water resistant. The first all-titanium smart ring combines exceptional durability with a gentle touch, even for sensitive skin.  Tech 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  Battery Life * 5-8 days of battery life  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-certified