Feature: 1. All Day Activity Tracking: Smart ring activity tracker combines elegant design with advanced technology to observe your health status. In daily work, it continuously monitors steps, distance, and calories burned etc., to motivate you to adopt an active lifestyle. 2. Fashionable and Comfortable: Lightweight, stylish, comfortable. Energy saving technology ensures continuous monitoring for 7 days on a single charge without interruption. The charging case can charge the ring 18 times. The APP is compatible for Android for iOS, allowing you to check data at any time. 3. Reshaping Active Life Style: It's not just a health monitoring device, it's also a proactive lifestyle. By recording and analyzing your health data, it can motivate you to choose a better life style to maintain health, vitality, and balance. 4. IP68 Water Resistant: Suitable for various daily water related scenarios such as handwashing, bathing, swimming, etc., and its various sensors can always observe your health data as usual. 5. Great Present: Smart health ring is a unique and thoughtful present for friends and family. It's a special present for weddings, graduations, or housewarming parties. Experience comfortable wear, making your loved ones feel appreciated. Specification: Item Type: Smart Ring Health Tracker Material: Stainless Steel Ring Battery Type: Lithium Battery, 18mAh (Shipped with) Ring Standby Time: about 7 Days Ring Charging Time: 60 Minutes Charging Case Battery Type: Lithium Battery, 200mAh (Shipped with) APP: for JYouPro. Package List: 1 x Smart Ring Health Tracker1 x Charging Case1 x User Manual