Feature 1Multiple Functions: The smart ring has multiple functions, which can monitor your heart rate, temperature and blood oxygen at any time, so that you can observe your health at any time. 2Lightweight 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. 3Detect Sleep Quality: This smart ring can detect your sleep time and sleep state during your sleep to tell you how your sleep quality is. 4Sports Ring: Smart health ring can also be a sports ring, because it can record your steps in a day, providing you great using experience. 5Smart Ring Material: The smart ring is made of aluminum alloy and ceramic, which is durable, beautiful and elegant. 6Ideal 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.SpecificationItem Type:SmartRingMaterial: Aluminum Alloy, Ceramic, Electronic ComponentsBattery Type: Lithium Battery (Shipped With Built In Battery)Battery Quantity: 18mAhDuration: 3-5 DaysCharging Time: 45 MinutesProtection Grade: IPX8 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Ring1 x Charging Cable1 x Storage Box1 x Manual