Smart Rings for Men Women, Ultra-Thin Sleep Tracker Ring, Waterproof Smart Ring with Silent Vibration Alerts&Reminder, Heart Rate, SPO, HRV, Blood Oxygen, Run, No APP Fee for OS&Android(Black, 8)

Ultra-thin at 2mm and featherlight at 2.5g, you won't feel it when you exercise, sleep, or work. This smart ring employs a distinct sizing standard, different from conventional rings. Order the sizing kit with your ring, or acquire the kit first to measure and secure the correct size from the start. 24/7/30 AI Auto Tracker This 24-hour health monitoring ring automatically logs your heart rate, HRV, temperature, and blood oxygen every 30 minutes during sleep with 99% accuracy. Your all-day fitness tracker ring examines sleep, activity, health trends (daily/weekly/monthly), and AI Q&A utilizing real-time data to provide personalized guidance. No Subscription Fees There are no monthly payments or hidden costs. Silent Notifications & Reminder Gentle vibrations notify you of calls, alarms, WhatsApp, WeChat, Ins, SMS, medication, water, birthdays, anniversaries, and festivals. Perfect for discreet reminders during meetings, next to your partner, or in the library. It delivers real-time health alerts if abnormal heart rate, low blood oxygen, or elevated temperature is detected. Waterproof & Long Battery With a 5ATM waterproof rating, you can swim, dive, surf, or shower while wearing it. Achieve 46 days of use from a 90minute charge, plus 25 days of standby time and offline data storage. Multi-Sport Tracking The activity monitoring ring tracks your steps, calories burned, and workout duration for running, walking, and cycling whether you're on a treadmill or a trail. It provides a thorough performance evaluation and assists in adjusting your goals based on actual data