xiaobi Smart Ring with Call/Clock/Events Alerts, No APP Subscription, Body Temp/Heart Rate/Women's Health Tracker, 5ATM Waterproof Fitness Ring for Android & iOS (Silver,9#)

【Find Your Perfect Fit】The Xiaobi Sizing Kit helps you find the most accurate and comfortable ring size before purchasing. By identifying the perfect fit in advance, it reduces the hassle of returns and exchanges, ensuring a smooth and confident buying experience. 【Smart Notifications On Your Finger】Stay effortlessly connected with the Xiaobi smart rings, designed to bring smart notifications to your fingertips - literally. With subtle vibration alerts for calls, alarm clock and schedule reminder, you’ll never miss a message, even during workouts, meetings, or moments when checking your phone isn’t ideal. NOTE:The app upgrade now supports message notifications. To enable them, simply select the corresponding app from the notification list. 【Track Sleep & Body Recovery】The sleep tracking ring continuously monitors key health indicators such as heart rate, blood oxygen (SpO₂), heart rate variability (HRV), and body temperature while you sleep. Using advanced sensors and intelligent algorithms, it analyzes your overnight data and generates a personalized wellness summary each morning. This insight helps you better understand your sleep quality, nighttime recovery, and overall readiness for the day - all from a lightweight, comfortable health ring you can wear 24/7. 【Smarter Fitness Tracking at Your Fingertips】The step counter ring tracks your steps, workout time, frequency, and progress toward your goals - all in one place. It brings together key health indicators to give you a simple, data-driven view of your overall fitness level, helping you stay motivated and on track every day. 【Sport & Fitness Stylish Partner】When wearing this smart ring health tracker during activities like cycling, hiking, strength training, or yoga, it automatically measures key health indicators and records your physical activity data.Tracks and analyzes resting heart rate, active heart rate, HRV, SpO₂, and body temperature, providing comprehensive health data summaries. 【Strong Waterproof & Battery Life】5ATM waterproof can matchwhole day weather environmentto diving,swimming, washing.This fitness tracker ring also waterproof of steam, andcan be wear in the bath, makinglife more convenient. Use Al algorithm to managethe battery & charging. Fullcharged working for 4-6 days. Standby time can be 25 days.