Feature: 1. Smart Ring Fitness Tracker: The smart ring combines elegant design with advanced sensors to track your health data. Get real time insights and take control of your well being. 2. Energy Efficient: The smart ring features a stylish and practical design, with energy efficient technology for 7 day continuous monitoring on a single charge. Compatible with for Android and for iOS for easy data viewing. 3. Revolutionize Your Active Lifestyle: More than a fitness tracker, the smart ring motivates you to make healthier choices. Personalized advice for fitness enthusiasts, sleep conscious individuals, and stress managers. 4. Practical Gift: The smart ring is a stylish accessory that feels comfortable to wear. Make your loved ones feel special and appreciated with this ideal present for weddings, graduations, and housewarmings. 5. IP68 Waterproof: Wear the ring freely in daily water related activities like handwashing, showering, and swimming. Sensors continue monitoring your health data in various water scenarios. Specification: Item Type: Smart Ring Product Material: Aluminum Ti Alloy, Stainless Steel Ring Battery: 18mAh Lithium Battery (Shipped with Built in Battery) Charging Case Battery: 300mAh Lithium Battery (Shipped with Built in Battery) Ring Battery Life: About 5 Days Ring Charging Time: 60 Minutes Waterproof Rating: IP68 APP: for ECTRI. Package List: 1 x Smart Ring1 x Charging Case1 x Instruction Manual1 x Charging Cable Note: All data are measured manually, and there are certain errors in the measurement results.