Feature: 1. HEALTH TRACKER: Tracks your health with advanced sensors by analyzing key body signals such as exercise data and sleep quality. It helps you stay on top of your health at all times. 2. FASHION AND TECHNOLOGY COMBINED: The smart ring combines elegant design with durable materials such as polished ceramic and 316 stainless steel, which is lightweight, stylish and comfortable. Meanwhile, it adopts energy saving technology to ensure continuous monitoring for 7 days on a single charge without interruption. APP is compatible with for Android, for iOS, convenient for you to check your data at any time. 3. REINVENTING A HEALTHY LIFE: It is not only a health monitoring device, but also a proactive life style. By recording and analyzing your health data, it can motivate you to make better life style choices to maintain health, vitality and balance. Whether you are passionate about fitness, sleep oriented, or want to manage stress effectively, the smart ring provides you with customized advice and guidance. 4. BEST GIFT: It is a fingertip art and is comfortable and senseless to wear. It is the ideal gift to make your friends and family feel special. It is also the perfect present for weddings, graduations and housewarming parties. 5. IP68 WATERPROOF AND DUST PROOF: You can wear it freely even in all kinds of daily water related scenarios such as washing hands, bathing, swimming and so on. 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 Charging Compartment Battery Type: Lithium Battery, Charging Compartment Battery Capacity: 400mah (Built In) APP: For JYouPro Color: White. Package List: 1 x Smart Ring1 x Charging Compartment1 x Instruction Manual1 x Charging Cable