Sleep Ring: Comprehensive Sleep AnalysisGet a comprehensive understanding of sleep behavior and physical condition by analyzing sleep efficiency, latency, time, stage, movement, etc. The sleep tracking function makes it an ideal health companion.Health Ring: Enhance Your HealthExperience a variety of indoor and outdoor activities with the smart ring app. Simply wear the ring to easily track steps, distance, calories, and pace. Analyze map routes and detailed exercise data to improve your performance and exceed your limits.Smartphone Camera RemoteThe ring doubles as a remote shutter release, allowing you to take selfies or group photos without the help of others. Even if you are alone, you can easily take the perfect photo.20 Exercise Modes and Fitness TrackerThe smart health ring tracks your activities throughout the day with high accuracy. For example, the fitness ring tracks your steps, walking distance, and calorie consumption. In addition, the smart ring also has different exercise modes, such as walking, running, and cycling. The ring tracks and scores your activities to encourage a more active lifestyle!Smart Ring: All-Day MonitoringThis smart ring uses energy-saving technology and can continuously monitor for 3 to 5 days without charging. Made of medical-grade stainless steel, it is comfortable to wear, waterproof up to IP68, and has a long service life.Lifetime Free SubscriptionSmart Ring health tracker data can be easily viewed through the mobile app without any subscription fee. Smart Ring supports Android 5.1 and iOS 8.0 and above.Rings are available in different sizesBefore placing an order, please choose the right size according to your finger. No. 8: 18.1mm, No. 9: 18.9mm, No. 10: 19.8mm, No. 11: 20.6mm.