Smart Ring for Women & Men, 5-7 Days Battery Life,Featuring Stress and Sleep Monitoring Functions, Compatible with iOS and Android,Waterproof Health R

【No Subscription Required】 No monthly fees or app subscription. Once you purchase the TrackJoy ring, you can use the health and fitness features without paying ongoing subscription costs. Track sleep, heart rate, blood oxygen, HRV, stress, and daily activity in the app. 【Sleep & Health Tracking】 Wear the ring day and night to track sleep duration and stages, including deep, light, REM, and awake time. It also monitors heart rate, blood oxygen, HRV, stress, and daily activity, making it easy to keep up with your everyday health and fitness data. 【5-7 Days Battery Life】 Get 5-7 days of battery life on a single charge. Whether you are tracking sleep patterns or fitness activities, you can count on long‑lasting performance without constant interruptions. 【IP68 Waterproof & Comfortable to Wear】 The lightweight design and smooth inner surface are made for comfortable all-day and overnight wear. With IP68 waterproof protection, the ring can be worn during workouts, showers, hand washing, and swimming. No screen or vibration means no distracting notifications.