【24/7 Health Monitoring - No Subscription Fee】 Track your heart rate, blood oxygen (SpO2), stress levels, and calories burned in real-time with this smart health ring. View detailed daily/weekly/monthly health reports in the app - no hidden fees, just accurate health tracking for men & women. 【Advanced Sleep Analysis - Optimize Your Rest】 This sleep tracker ring automatically records your deep/light sleep phases, REM cycles, and wake times. Get personalized insights to improve sleep quality and wake up refreshed every morning. 【All-Day Activity Tracking - 10+ Exercise Modes】 The fitness tracker ring monitors steps, distance, calories burned, and workout intensity across running, cycling, walking and more. Perfect step counter ring for active lifestyles. 【Long Battery Life - 61 Days with Charging Case】 Enjoy 5-7 days of continuous use on a 30-minute charge. Includes a portable 400mAh charging case (16 extra charges) - ideal for travelers needing reliable health monitoring on the go. 【Complete Gift Set - Universal Compatibility】 Package includes: smart ring (size adjustable), magnetic charging case, USB cable, and manual. Works with Android/iOS - the perfect gift ring for health-conscious men and women. AI Smart Ring for Women Men - Sleep Tracker Ring with Heart Rate , Blood Oxygen , 10ATM Waterproof Fitness Ring , Step Counter & GPS Activity Fitness Tracker ,7-Day Battery for iOS/Android