Features: This Intelligent Rings stands out with its advanced health monitoring features, including 24/7 heart rate tracking and comprehensive sleep analysis, making it essential wearable for health Alerts individuals. Crafted with a steel shell and utilizing low temperature potting technology, this Intelligent Rings boasts a 5ATM waterproof rating, ensuring durability and bounce back in various conditions. designing for both men and women, this rings is perfect for fitness enthusiasts, users, and anyone look to keep tracking of their health effortlessly. Whether you're at the gym, swimming, or simply going about each day routine, the lightweight and comfortable design of this rings makes it Suitable for all day wear without compromising on style. With its design and reliable Performances, this Intelligent Rings seamlessly integrates into your lifestyle, offering a blend of modern art and cutting in wearable electronics. Specifications: Material: metal Type: No.8 18.1mm/No.9 18.9mm/No. 10 19.8mm/No. 11 20.6mm(optional) Package Includes: 1xSmart Rings note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.