Item Type: Smart Health RingMaterial: Stainless Steel, Electronic ComponentsBattery Type: Lithium Ion Battery (Shipped With)Battery Capacity: 18mahBattery Life: 3-5 DaysCharging Time: 45 MinutesProtection Level: IPX8How to Use:Power On Off:Power On: After the ring is fully charged, disconnect the power supply and the ring will automatically power on. Power Off: When the battery is depleted, the ring will automatically power off. Bluetooth Connection:After disconnecting the power supply, the ring will automatically power on and enable Bluetooth broadcasting. Open the app and search for the device to connect. Note: Please grant the app bluetooth and location permissions.Blood Oxygen Monitoring:Automatic Testing: The ring automatically tests blood oxygen levels every 2 hours, saves the test data, and generates historical records and charts.Real Time Testing: Press the test button to actively test the real time blood oxygen level and save the latest data. Note: Maintain a seated position during blood oxygen monitoring. The inner ring of the ring will continuously flash red during monitoring. The app will vibrate to alert if the detected value exceeds the upper or lower limits.Test Time and Step Count Statistics:Real time recording of hourly step count, generation of step count records and charts, real-time data synchronization when connected to the app, step count upload when not connected.Blood Pressure Testing:Blood pressure testing is an active test. Click the test button to display the data.Sleep Monitoring:The ring records complete sleep cycles in real time, analyzes the duration of awake, light sleep, deep sleep, and other stages using scientific algorithms, and generates sleep records and charts.Ring App Upgrades:The app automatically detects the ring's firmware version. To enhance the user experience, please upgrade the ring and app to the latest version. 1Multifunctional: The smart ring offers a variety of functions, allowing you to monitor your body temperature, and blood oxygen levels anytime, enabling you to stay aware of your health status. 2Lightweight: The smart health ring features an ultra lightweight body, providing a comfortable wearing experience with virtually no sensation of wearing it. It's so light that you may forget it's even there. 3Sleep Quality Monitoring: This smart ring can detect your sleep duration and sleep stages during your sleep, providing valuable insights into the quality of your sleep. 4Activity Tracker: The smart health ring also serves as an activity tracker, keeping track of your daily steps and providing you with a pleasant user experience. 5Durable: The smart ring is made of aluminum alloy and ceramic, ensuring durability, aesthetic appearance, and elegance. This smart ring is a meaningful gift for birthdays, anniversaries, Thanksgiving, Christmas, Hanukkah, or Valentine's Day.