Health Tracking: Monitor fitness levels, track sleep quality, and log exercise data with this sleek and lightweight smart ring, ideal for daily use and workouts. Compatibility: Works seamlessly with Android 5.1+ and iOS 8.0+ devices via the "Qring" app, ensuring hassle-free connectivity and data synchronization. Durable Design: Crafted from premium aluminum alloy, this stylish ring offers a sporty and simple look, perfect for both men and women. Easy Charging: Equipped with a built-in lithium battery, the smart ring recharges easily via USB, providing convenience and long-lasting power for extended use. Gift-Ready: Ideal for gift-giving occasions like Valentine's Day, this fashionable fitness ring makes a thoughtful present for fitness enthusiasts or tech lovers.