Cryfokt Smart Ring - Heart Rate Monitor Sleep Monitor IPX8

1. Multiple Functions: The smart ring has multiple functions, which can monitor your heart rate, temperature and oxygen at any time, so that you can observe your health at any time. 2. Lightweight Design: The ultra light body of the smart ring has no sense of wearing. The wearing experience is so light that you may forget its existence. 3. Detect Sleep Quality: This smart ring can detect your sleep time and sleep state during your sleep to tell you how your sleep quality is. 4. Sports Ring: Smart health ring can also be a sports ring, because it can record your steps in a day, providing you great using experience. 5. Stainless Steel Smart Ring: The smart ring is made of stainless steel and ceramic, which is , beautiful and elegant. 6. Ideal Gift: This smat ring is a meaningful gift. It is suitable for any scene or holiday, such as birthday, anniversary, Thanksgiving, Christmas, Hanukkah or Valentine's Day. Spec: PP program to thItem Type: Smart Ring Material: Stainless Steel, Electronic Components Product Color: Black Battery Type: Lithium Battery (Shipped With Built In Battery) Battery Quantity: 18mAh Duration: 3-5 Days Charging Time: 45 Minutes Grade: IPX8 How to Use: Turn on off Power on: After the ring is fully charged, disconnect the power and the ring will automatically turn on/off: After the battery is depleted, the ring will automatically turn off Bluetooth connectivity After disconnecting the power, the ring will automatically turn on, Bluetooth will start broadcasting, the app will search for devices, and select connection instructions: Please open the Bluetooth and location permissions of the app oxygen concentration monitoring Automatic testing: The ring automatically tests the oxygen concentration every 2 hours, saves the test data, and generates historical record charts; Real time testing: Click the Test button to actively