Oura Ring Gen3 Horizon - Size 9, Silver Monitors Sleep, Heart Rate and Fitness Up to 7 Days Battery Compatible with iOS/Android Try it Measurement Kit

SIZE BEFORE YOU BUY - Oura Ring sizes differ from standard sizes. By purchasing an Oura Measurement Kit on Amazon, you get an Amazon credit of €10 for the purchase of the Oura Ring, subject to terms and conditions. REVOLUTIONARY SMART RING - Monitor sleep, activity, stress, heart rate and more with the Oura subscription. For new members, the first month is free, then €5.99 per month. Sign up to access your Oura subscription on Oura App. PRECISION DESIGN - The finger is the best point to detect pulse and other important parameters to personalize health data. Oura Ring sensors accurately monitor over 20 biometric data SYNC OTHER APPS - Oura is compatible with iOS and Android, and offers integrations with over 40 apps, including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava and more. PRACTICAL AND COMFORTABLE - The Oura Ring is made of titanium: durable, lighter than a wedding band, hypoallergenic and water resistant. Oura monitors your health quietly and accurately, whatever activity you are doing.