Feature: 1. MOTION MONITORING: By analyzing key data such as motion data monitoring and tracking your condition with advanced sensors, it helps you keep track of your health at all times. 2. DIGITAL DESIGN: Superb craftsmanship, bringing you a new wearing experience. APP is compatible with for Android and for iOS to view monitoring data in real time. Ultra low power consumption ensures that a single charge can continuously monitoring for 7 days without interruption. 3. MULTIPLE EXERCISE MODES: Support regular exercise multiple and map track exercise, including walking, running, cycling, etc. View APP exercise data after exercise, such as exercise time, exercise distance, calories consumed, etc., to have a clearer understanding of the factors that affect your health and athletic ability. 4. IP68 WATERPROOF: Totally enclosed structure, IP68 grade waterproof technology, swim, dive or snorkeling can be worn, support 1000 meters depth waterproof, meet your various waterproof needs. 5. IDEAL GIFT: Smart ring is fingertip art, comfortable and senseless to wear. It is an ideal gift to make your friends and family feel special and appreciated. It is also a perfect present for weddings, graduations and housewarming parties. Specification: Item Type: Smart Ring Product Material: Ceramic, Stainless Steel Ring Battery Type: 18mAh Lithium Battery (Shipped with Built in Battery) Ring Battery Life: About 7 Days Ring Charging Time: 60 Minutes APP: for Lefun Health(life). Package List: 1 x Smart Ring1 x Instruction Manual1 x Charging Cable Note: All data are measured manually, and there are certain errors in the measurement results.