Sleek and stylish smart ring designed specifically for women’s wellness. Tracks heart rate, sleep, activity, menstrual cycle and more—all without a bulky watch. Lightweight and comfortable for all-day wear. Perfect for staying on top of your health with a minimalist look! Gifted, gently used (worn for a few days) Comes with a charging case and USB cord. Compatibility: iOS v16 or above, Android OS 12 or above - US only Overview: With Daily Summary, get a holistic look at your day from activity to recovery. Receive insights based on health data and logged metrics, that customize to you over time, helping to connect the dots between aspects of your health. Prioritize the health goals that are most important to you, and easily view your progress and trends. Health Metrics: heart rate, resting heart rate, heart rate variability, skin temperature variation average, respiration rate, blood oxygen (SpO2) Menstrual Health: period prediction, ovulation prediction, mood and symptom tracking Sleep Quality: sleep duration, sleep stages, overnight vitals Activity Tracking: step count, active minutes, distance traveled, calories burned, workout tracking