【Activity Fitness Tracker】The fitness tracking ring records your exercise data and automatically monitors your heart rate and heart rate every half hour or manually via the app. Oxygen saturation and stress test are measured manually through the app.【Comprehensive Sleep Analysis】Comprehensive understanding of sleep behaviour and body state by analysing sleep efficiency, latency, time, stage, exercise, HRV, body temperature, etc.【Enhance Your Health】Experience a variety of exercise activities on the Smart Ring app, covering GPS, indoor and outdoor. Easily track steps, distance, calories, heart rate and pace while wearing Smart Ring. Analyse map path tracking and detailed workout data to improve your performance and exceed your limits.【No Subscription Fee】Smart Ring health tracker data can be easily viewed through the mobile app without any subscription fee.Smart Ring supports Android 5.0 and iOS 10.0 and higher.【Smart Ring Simple and Elegant, Cutting-Edge Performance】Smart Ring surpasses traditional wearable devices with its simple, clear resin inner diameter design. The smart ring uses cutting-edge technology for precise data monitoring and smart manufacturing. Stylish, simple and elegant, it excels in both appearance and hardware