Oura Ring 4 - Black - Size 8 - Smart Ring | First measure with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 days battery life - JZ90-54144-08

The Oura Ring 4 Sizing Kit allows you and those around you to find the ideal fit before purchasing. When you purchase a sizing kit, a credit of 10 EUR will automatically be applied to your Oura Ring 4 at checkout. A properly fitting Oura Ring 4 results in the highest possible data accuracy, comfort and overall experience. Oura Ring 4 sizes differ slightly from standard ring sizes, so it is important that you size yourself using our tools and follow our sizing instructions. The Oura Ring 4 works on all fingers and can be worn on both hands. For optimal accuracy, we recommend wearing the Oura Ring 4 on your index, middle or ring finger.

• MEASURE BEFORE PURCHASE - The Oura Ring 4 sizes are different from standard ring sizes. Compete with the Oura Ring 4 Sizing Kit and receive a 10 EUR Amazon credit towards the future purchase of an Oura Ring 4.
• OURA MEMBERSHIP - The first month of membership is free with your purchase, then EUR 5.99/month. The offer is only valid for new members. Or opt for the annual prepaid option for EUR 69.99.
• ACCURACY - SMART SENSING - Oura collects more than 30 biometric data including sleep, activity, stress, heart health and women's health metrics. The Oura Ring 4 is equipped with Smart Sensing that adapts to you.
• LONG-LASTING BATTERY - With a battery life of up to 8 days, no screen and no vibration, the Oura Ring 4 allows you to focus on the present. Whether during training or when going out in the evening.
• 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 from titanium combines exceptional durability with a gentle touch.

Category: Heart rate monitors