Feature: 1. MOTION MONITORING: By analyzing key data such as motion data monitoring and tracking your condition with advanced sensors, this smart health ring helps you stay on top of your health. It can motivate you to make better life style choices to stay healthy, energized and balanced. 2. ENERGY SAVING: The health tracker ring utilizes energy saving technology that ensures continuous monitoring for up to 7 days on a single charge without interruption. APP is compatible with for Android, for iOS, making it easy for you to view your data at any time. 3. PROMOTE A HEALTHY LIFE: Record and analyze your health data, whether you are passionate about fitness, focus on sleep, or want to effectively manage stress, smart ring can provide you with tailored advice and guidance. 4. IP68 WATERPROOF: This smart health tracker ring offers IP68 waterproof and dustproof, wash your hands, take a bath, swim and other daily water related scenarios to wear at will, and all kinds of sensors to track your health data as usual at any time. 5. GIFT OPTION: The fitness tracker ring combines elegant design with durable materials such as polished ceramic, which is lightweight, stylish and comfortable. It is the perfect gift choice for weddings, graduations and housewarming parties to make your friends and family feel special. Specification: Item Type: Smart Health Ring Material: Ceramic, Stainless Steel Ring Battery Type: Lithium Battery, Ring Battery Capacity: 18mAh (With Built in Battery Shipped) Ring Battery Life: About 7 Days Ring Charging Time: About 60 Minutes APP: For JYouPro. Package List: 1 x Smart Health Ring1 x User Manual 1 x Charging Cable Note: Manual measurement, please allow some errors.