Oura Ring 4: Titanium Ring with 24/7 Health Tracking
The Oura Ring 4 is a smart titanium ring that combines exceptional durability with minimalistic style. The ring tracks over 50 health metrics, including sleep, activity, stress, heart health, and women's health, using Smart Sensing technology for continuous and accurate data collection day and night. The ring works for up to 8 days on a single charge, has a waterproof casing, and easily syncs with over 40 apps, including Apple Health and Google Health Connect. Purchase includes the first month of membership (subscription required to access all data, then $5.99/month). Important: Before purchasing, you must accurately determine your size using a special Oura Ring Sizing Kit.