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)

Discover the ideal fit with an ultra-slim 2mm, feather-light 2.5g design you won't feel it during exercise, sleep, or work. This smart ring employs a distinct sizing system unlike conventional rings. Purchase the sizing kit alongside your ring, or acquire the kit first to measure and secure the correct size from the start. 24/7/30 AI Auto Tracker A 24-hour health monitoring ring automatically logs your heart rate, HRV, temperature, and blood oxygen every 30 minutes with 99% accuracy during sleep. Your all-day fitness tracker ring evaluates sleep, activity, health trends (daily/weekly/monthly), and AI Q&A utilizing real-time data to provide tailored advice such as consistent sleep and suitable exercise. No Subscription Fees No monthly fees, no concealed charges. Silent Notifications & Reminder The silent vibration smart ring employs gentle vibrations to notify you of calls, alarms, WhatsApp, WeChat, Instagram, SMS, medications, water intake, birthdays, anniversaries, and festivals. Perfect for discreet reminders during meetings, next to your partner, or in the library. The health tracker delivers real-time health alerts upon detecting irregular heart rate, low blood oxygen, or elevated temperature. Waterproof & Long Battery A 5ATM waterproof rating allows you to swim, dive, surf, or shower while wearing it. Achieve 46 days of use from a 90-minute charge, along with 25 days of standby time and offline data storage. Multi-Sport Tracking The activity monitoring ring logs your steps, calories burned, and workout duration for running, walking, and cycling whether on a treadmill or a trail. Provides a thorough performance evaluation and assists in adjusting your objectives with actual data