Fit Ring, Smart Health Rings for Women Men with Heart Rate,Blood Oxygen,HRV,Stress Level, Sleep Monitor, Step Tracker, No Subscription Fee, IP68 Waterproof Smart Ring for iphone &Android (Gold, 10# — Open-Box

💎【Size Before You Buy】 Before purchasing the FKGZJF Smart Ring, we recommend following the string method shown in our images to measure the outer circumference of the finger you'll wear the smart ring on. Then compare your measurement with our size chart in the images to find your correct size. Quick Tip: Pull the string a bit tighter when measuring, or choose one size smaller. This helps the smart ring fit more securely and prevents it from slipping off easily.

💎【Track Your Health from Your Finger】: This smart health rings for women men provides 24-hour blood oxygen monitor, heart rate moinitor, heart rate variability (HRV) monitor and stress level moinitor. You can conveniently view these real-time health indicators from the Q Ring App, and You can view daily, weekly and monthly health data in the App. This ring health tracker provides you a more accurate monitoring information to help you explore a healthier lifestyle.

💎【Intelligent Sleep Tracker】: This health tracker ring can automatically monitor your sleep. Monitor your falling asleep, waking up time, sleep quality (deep sleep and light sleep) through graphs. You can view daily, weekly and monthly sleep data in the App, helping you better adjust your habits to improve your sleep quality. This fitness ring is so comfort, you won’t even notice it’s there while it monitors your sleep.

💎【Activity Tracker & 100+ Sport Modes】: This fit ring automatically track your steps, calories burned and distance throughout the day. This ring fitness tracker has more than 100 sports modes such as running, cycling, skipping rope, walking, hiking, yoga, dancing, golf and more. Active these sport modes, you will get sport time, steps, heart rate, calories burned and distance from the App, to provide you with more effective exercise guidance.

💎【NO Subscription Fees】: After purchasing the health monitor ring, you can enjoy lifetime free access to the Q Ring application. Enjoy real-time health tracking around the smart ring without any extra fees. No subscription fees to download the App and use it for lifetime.

💎【Long Battery Life】: The FKGZJF health rings has a battery life of up to 3-5 days on a 2 hrs charge. We offer a magnetic charging cable and a free portable charging case with 400 mah battery, The fully charged charging case can recharge the fitness rings up to 15 times, which greatly extending the usage time to 60 days.

💎【Remote Capture】The smart ring supports remote photo control to effortlessly capture great moments. Activate the function in the app, then gently shake the ring to remotely capture photos using your smartphone.

💎【Easy to Charge and Wide Compatibility】: Simply charge the fitness ring tracker by a magnetic USB cable or by the charging case. The smart ring for women men is compatible with Android 4.4 / iOS 8.4 or above smart phones.This ring tracker is a great gift for men and women.

Fit Ring, Smart Rings for Women Men, Fitness Tracker with Heart Rate, Blood Oxygen, heart rate variability (HRV) monitor and stress level moinitor, Sleep Monitor, Step Tracker, No Subscription Fee, IP68 Waterproof Smart Ring for iphone & Android. Utra Battery Life with 400mah big charge case. it's not a Medical devices and accessories.