SEEVEN Smart Ring for Women Men, Fit Ring with Heart Rate, Blood Oxygen, HRV, Sleep Monitor, Step Counter, No Subscription Fee, IP68 Waterproof Fitness Rings for iPhone & Android (Gray, 9#)

This smart ring provides 24/7 monitoring of heart rate, Blood Oxygen, HRV, and stress. It tracks your resting heart rate, detects low Blood Oxygen during sleep, measures nervous system balance through HRV, and identifies rising stress in real time. The fit ring automatically tracks sleep stages—light, deep, and REM—without manual activation. In the app, you can review your sleep history for the past 30 days. Rated IP68, it's waterproof for hand washing, rain, workouts, or showering. The ultra-slim, lightweight design feels comfortable for all-day wear. Activity tracking counts steps, distance, calories, and active minutes automatically. Battery lasts 3–5 days, and with the rechargeable charging case, total usage extends to 60 days. No subscription fees. Pay once, get full access forever. it's not a Medical devices and accessories.

• Easy Size Selection: To find your fit, simply use a piece of thin string to wrap around the base of your finger. Mark where the string meets, then measure that length against a ruler to get your finger's circumference. Refer to our detailed size chart to match your measurement with the correct smart ring size. We recommend choosing one size smaller than your measurement, as the string method tends to give a looser fit. Going one size down helps prevent the smart ring from slipping off
• No Subscription Fees: Unlike many other smart wearables that lock basic health data behind monthly paywalls, our smart rings for men comes with zero subscription fees. Pay once and get full access to all features-heart rate, sleep tracking, Blood Oxygen, HRV, stress monitoring, and activity logging-forever. No hidden costs, no upgrade tiers, no monthly charges. What you see is what you get, for life
• Sleep Monitoring: The sleep tracking ring automatically tracks your sleep stages-light, deep, and REM-throughout the night without any manual activation. You'll see exactly how long you spent in each stage, how many times you woke up, and receive personalized insights to improve your sleep quality over time. In the app, you can review your complete sleep history for the past 30 days to spot trends and track your progress
• Advanced Health Tracking: This smart ring for women provides 24/7 monitoring of heart rate, blood oxygen, HRV, and stress. The ring health tracker continuously tracks your heart rate throughout the day and night, detects low Blood Oxygen levels automatically, measures HRV, and identifies stress in real time before you even feel it. You'll see exactly when stress spikes, which habits improve your HRV, and how your heart and oxygen levels respond to sleep, exercise, and daily life
• Automatic Activity Tracking: The fitness rings automatically tracks your daily activity without any manual input, Just wear it like a traditional ring. The fitness ring tracker counts your steps, measures distance traveled, calculates calories burned, and records active minutes throughout the day. Whether you're walking, running, or just moving around the house, the ring detects it all. Open the app anytime to see your total daily activity and stay motivated to reach your goals
• IP68 Waterproof Built for Daily Life: The smart ring women is rated IP68, meaning it's fully protected against dust and can withstand immersion in water up to 1.5 meters deep for 30 minutes. Wear it while washing your hands, running in the rain, sweating through an intense workout, or even showering. There's no need to take it off-this ring is designed to keep up with your everyday life, no matter how active you are
• Slim Design Comfortable for All-Day Wear: The fit ring features an ultra-slim, lightweight design that fits naturally on your finger like a traditional ring. Made from smooth, hypoallergenic materials, it feels barely there whether you're typing, sleeping, or working out. No bulk, no sharp edges, and no discomfort. You'll forget you're wearing it-but it never forgets to track your health around the clock
• Extended Battery Life: Battery lasts 3 to 5 days on a single charge, and with the included rechargeable charging case, total usage extends to 60 days. Spend less time charging and more time tracking your health and fitness goals throughout your day