Outer Surface Material: Zirconia ceramics Product Weight :5.5 gram Battery Capacity: 18 mah Lithium-ion batteries Cahrging Case: 400mah charging case 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 Case1x 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.

Ceramic stainless steel body: weighs about 5g lighter, with microcrystalline zirconium nano ceramic body and stainless steel inner ring. The Wireless bracelets and Bluetooth Watches have enough sensors to not only measure our heartbeat but sometimes even detect irregular blood oxygen. 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. Worry-free use: The newly upgraded smart ring comes with a charging box, featuring a stylish appearance and convenient storage.IP68 waterproof, anti sweat for daily use.