O Ring Smart Ring, Fitness Trackers Rings with Sleep/Stress/Heart Rate/Women's Health Monitoring, No Subscription, Comfortable Wearing, Long Using, Fitness Ring for Android & iOS, Black-Size8

Get the Sizing Kit First The sizing of this smart ring differs from conventional jewelry rings. You need to use the official sizing kit before buying wear the tester ring to verify comfort and fit. Innovative Stress Tracking This fitness tracker ring monitors HRV continuously throughout the day, automatically measures stress levels, and assists you in managing stress with tailored insights. Effortlessly monitor your body's reactions without interrupting your routine. Comprehensive Sleep Management The ring captures and examines deep sleep, light sleep, REM, and wake periods in detail. It supplies key vital signs data including sleep score, heart rate, blood oxygen, and HRV, transforming intricate sleep data into clear scientific guidance to help you manage your sleep. One Ring, Multiple Functions A single fitness ring manages all your daily health tracking requirements: step counting, activity monitoring, mood logging, menstrual cycle prediction for women, basal body temperature tracking, and more. Additionally, ongoing performance enhancements and new feature updates deliver a personalized and evolving experience. No Subscription Fee All useful and enjoyable features are included free with the companion app. The ring allows you to consistently access real-time health monitoring and personalized insights. It works with both iOS and Android. Comfortable and Waterproof Weighing just 3 grams and crafted from strong titanium, it is rated 5ATM waterproof. You do not need to take it off when washing hands or showering. It is engineered for all-day wear, providing comfort and longevity, with a fashionable appearance that matches your style