Feature: 1. HEALTH TRACKING: This smart ring can track your health using advanced sensors to help you stay on top of your health by analyzing key body signals such as exercise data and sleep quality. 2. FASHION AND TECHNOLOGY COMBINED: Elegant and stylish design and made of sturdy materials such as polished ceramic, lightweight, fashionable and comfortable. And it adopts energy saving technology to ensure that a single charge can be used continuously for 7 days without interruption. APP is compatible with for Android, for iOS, convenient for you to check your data at any time. 3. HEALTHY LIVING: By recording and analyzing your health data, it can motivate you to make better life style choices to stay healthy and energized, while providing you with tailored advice and guidance on sleep, fitness and stress management. 4. GIFT GIVING CHOICE: Practical and comfortable to wear, this smart ring is a perfect present for friends and family at weddings, graduations and housewarming parties. 5. IP68 WATERPROOF DUSTPROOF: You can wear it as much as you want even when washing your hands, bathing, swimming and other water related scenarios. Various sensors monitor your health data as usual. Specification: Item Type: Smart Ring Material: Ceramic Ring Battery Type: Lithium Battery, Ring Battery Capacity: 18mah (Built In) Ring Battery Life: About 7 Days Ring Charging Time: 60 Minutes APP: For Da Rings Color: White. Package List: 1 x Smart Ring1 x Instruction Manual1 x Charging Cable