Size Before You Buy Before purchasing Milavan 2.0, we recommend ordering our sizing kit to try on. If you prefer not to use the kit, please refer to the size chart and measure your finger circumference for a more comfortable fit Upgraded Core Chip & Free App Now powered by the advanced AB2026B3 chip with a high-precision sensor, offering higher accuracy, faster response, lower power use, and enhanced health tracking through the free app Anti-Bump Design The ring is upgraded to a 7mm width, offering a lightweight and comfortable fit. Its micro-matte finish enhances protection, effectively preventing fingerprint and scratch issues commonly seen in other rings on the market Health Monitoring This slim 2.0 ring, equipped with an advanced 5.0 sensor, auto-measures heart rate, HRV, blood oxygen, blood pressure, and stress every 30 minutes, offering continuous tracking and comprehensive wellness insights all day Intelligent Sleep Tracker The upgraded supports 24-hour automatic sleep monitoring. Compared with common fixed-time monitoring on the market, it provides more precise tracking of deep sleep, light sleep, rapid eye movement stages, and wake times 187 Sports Modes Tracking Supports running, walking, boxing, ball games, water and ice sports, etc. Automatically records exercise data and syncs to the app. Turn off after use to prevent excessive battery drain Sport & Fitness Stylish Partner The inner surface is specially polished for a comfortable fit during most sports. Activate sport mode to sync data from the app, helping you achieve more effective workout guidance Long Battery Life & Compatibility This smart ring charges in 1 2 hours and lasts 3 5 days. Compatible with Android and iOS, it includes a charging case and an upgraded 500mAh battery, delivering stronger and longer-lasting performance Remote Shooting & Friends Feature The app supports remote camera control, has a device-finding function to easily locate the ring, and allows sharing of health data, making it great for friends, couples, and family care.