Oura Ring 4 - Rose Gold - Size 5 - Smart Ring | Measure first with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 days battery life

["MEASURE BEFORE PURCHASE - The Oura Ring 4 sizes differ from standard ring sizes. Measure yourself with the Oura Ring 4 Sizing Kit and receive a 10 EUR Amazon credit for future Oura Ring 4 purchases.","OURA MEMBERSHIP - The first month of membership is free with your purchase, then 5.99 EUR/month. Offer only valid for new members. Or opt for the annual prepaid option for 69.99 EUR.","ACCURACY - SMART SENSING - Oura captures over 30 biometric data points, including sleep, activity, stress, heart health, and women's health metrics. The Oura Ring 4 features Smart Sensing that adapts to you.","LONG-LASTING BATTERY - With a battery life of up to 8 days, without a screen or vibrations, the Oura Ring 4 allows you to focus on the present. Whether during workouts or evenings out.","DESIGNED FOR 24/7 WEAR - The updated design of the Oura Ring 4 is even more comfortable, fits better than ever, and is waterproof. The first smart ring made of titanium combines exceptional durability with a gentle touch."]