Outer Surface Material: Zirconia ceramics Product Weight :5.5 gram Battery Capacity: 18 mah Lithium-ion batteries Battery Time :3 days, depending on the frequency of use Charging Ways: Use the charging cable provided, USB rated 5V Charging Time :45 minutes Light Emitting Sensor: LED of all visible colors, safe and friendly for users Connection Method: Low-power Bluetooth 5.0 Software Program :Update Updates through software applications Software Compatibility:AppStore, Google Play Waterproof Level:IPX 68 Package Included : 1x Smart Ring 1x Charging Case 1x User Manual Historical data saved for 7 days with scrolling save Multi sport mode :running, cycling, skipping rope, fitness, mountaineering, yoga, golf, dance? 1. Celsius and Fahrenheit are interchangeable 2. Kilometers and miles are interchangeable 3. Waterproof level 5. Battery working time up to 3 days 4. App display will not delay when pressing Test button 5. More accurate sensors.

Exercise monitoring: Identify exercise patterns, record calorie consumption and daily metabolism during exercise. Magnetic suction fast charging: Faster charging and longer battery life.The size of the smart ring is an international standard size of 10 #, with an inner diameter of approximately 20mm. Blood oxygen monitoring: The ring is equipped with an optical blood sample sensor to enable 24-hour blood oxygen monitoring, helping to adjust body status in a timely manner. Heart rate monitoring: Track heart rate 24/7 and monitor health status in real-time. Sleep monitoring: Advanced new sleep algorithms that capture subtle changes in the body.