Smart Ring Fitness Tracker Ring, Multi-Modes Fitness Tracker Rate Pedometer Sleep Monitoring Waterproof Bluetooth Connectivity(Gold-US 9#)

Smart Sleep Analysis: Real-time monitoring of sleep movement, and transmission and recording in the App, including sleep duration, deep sleep duration, light sleep duration, awakening duration, etc., bringing you better sleep suggestions!

24/7 Heart Health Monitoring: As a professional heart health consultant, the smart bracelet is equipped with a high-precision and high-performance heart rate sensor, which can accurately acquire data and monitor your heart activity around the clock.

Movement Data Monitoring and Recording: Real-time monitoring of your various movement data, the number of steps in a day, the distance of movement, calorie consumption, and the trend of movement changes in a day, view it on your phone anytime, anywhere!

Excellent Waterproof Performance: Medical grade stainless steel shell material, lighter and harder, available in black and gold color. More IP68 waterproof, you can wash your hands, take a bath, swim. No worries!

Ultra-Precision Sensors: Acceleration Sensor, Optical Heart Rate Sensor, Optical Blood Oxygen Sensor, and Infrared Sensor work at the same time, comparable to professional devices!

Free App: Smart bracelet health tracker data can be viewed on the mobile app for free without any subscription fee. The device supports Android 5.1 and iOS 8.0 and above.