Product Description



















Important Health & Usage Notes
This product is not a medical device. The data and messages it provides are for reference only and should not be used for clinical diagnosis or as a substitute for professional medical advice.
This product is not applicable for:
- Users under the age of 18.
- Users diagnosed with arrhythmias or other specific heart conditions.
Please read the user manual thoroughly before use.
• Arrhythmia: If you have an arrhythmia, using this product to measure blood pressure may result in significant data errors.
• Circulatory Issues: This product measures radial blood pressure at the wrist. Users with high blood viscosity, poor circulation, or vascular sclerosis (such as those with diabetes, hyperlipidemia, hypertension, or cerebral thrombosis) may experience inaccurate measurements.
• Position: Keep your wrist at the same level as your heart during measurement.
• Preparation: Do not perform vigorous exercise within 5–10 minutes before measuring.
• During Measurement: Remain seated or lying down, and do not talk until the measurement is complete.
• Suitable for: Shallow water activities, such as swimming in pools or near the coastline.
• Not Suitable for: Hot showers, hot springs, saunas (steam rooms), platform diving, high-pressure rinsing, scuba diving, or technical diving.
• Important: Water resistance is not permanent and may decrease over time due to daily wear and tear. After swimming in the ocean, always rinse the watch with fresh water.
• Strap Warning: Leather and metal straps are not designed to withstand swimming or heavy sweat. For water activities, silicone or fluoroelastomer straps are recommended.
Customer Reviews
Overall rating: 4.6 / 5 from 56 reviews.
Excellent service. High accuracy of readings. Comparing regularly with the other smart rings as per photos
Roger L. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Really like it
Dolores S. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
I love it because I can track 6 different things
Miguel S. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Ring works great and the app is free but very bare bones. The ring nor the app indicates when the battery is low so it just stops collecting data without warning. App could add a battery tracking feature
Lori C. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
§ I got one that fits tightly … difficulty to remove when i need to charge, and wear it back after
Gerard L. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Great
Thomas A. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Love this ring. The battery life is great and it has a lot of functionality that I really wanted. Had a FitAOS watch before, and the ring has that same functionality!
Jim R. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
It does exactly what I want it to do, the app is simple and very user friendly, I also have an Oura ring which cost me 250 pounds but this one is much better wish I had known about it sooner, could have saved myself a fair penny
Pauline T. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Ring works great.
Charles R. 5/5 Verified
It does a good job of keeping me informed
Pete W. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Expected polished experience!
Zafar S. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
I'm a diabetic so was interested mostly in the blood glucose and blood pressure features, which I've found very interesting. I wish there was a better way to measure the sleep option as it tends to pick up down time like watching TV or reading as sleep time
Dean P. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
It's pretty reliable. Lightweight.
Eddie M. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
It is very helpful with keeping track of all of my vital signs,especially my blood glucose without having to do a finger stick.
Ella S. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Works great, would like the glucose meter to be calibrateable with readings from my test strips ever 30 days.
Bryan B. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
❤️
John P. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Wors great.
Bryan B. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Fantastique!
Jean-pierre L. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Good
Albert B. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Ring is comfortable and health tracking works good, but one major problem is that the Bluetooth connection keeps disconnecting constantly, therefore the 3 stars rating. Otherwise nice ring and it looks beautiful.
Julio A. 3/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
The battery really last 5 days. Charging is fast. All informations are accurate ! I made a good choice !
Guy-henri G. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
So far the ring works well. It’s takes a while for it to sync to my phone, and the app Is fine. I wish the battery lasted longer.
Jill B. 3/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
It’s very stylish, and it helps me keep an accurate track on my fitness goals. I love that I can track my sugar intake, so that I can watch what I’m eating
Traci B. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Works good
Alan D. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Helps my health journey to know how my numbers are daily.
Rebecca M. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Works good
Susan B. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Works great but battery only lasted 3-4 days max
Au S. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Excellent value for money - blood pressure, pulse, oxygen and glucose data seem ok - ring charge lasts around 4 days - app works great I just wish there were less notifications
Hani Z. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Like the ring style. Use it every day to monitor my Blood Glucose, Blood Pressure, Heart Rate and Blood Oxygen.
Andrew S. 4/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
very sleek and accurate..
Mario H. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Comprehensive health data
David F. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Good product, easy to use with the App, measurements are reasonably accurate.
Greg R. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Easy to use and sync with my iPhone. I am pleased with the ring.
Gus D. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Very good and seems to be accurate to within a small discrepancy after testing against other measuring equipment and surgery readings. Its a shame it does not come with a charger box. Still trying to work out how to export the readings should a doctor ask. Otherwise, it is a great little asset.
Kim R. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Most accurate of 3 smart rings I've tried
Jere S. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Blood glucose monitor works great
David M. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Works great, looks good.
Normand B. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Enjoying the ring and the data it is providing. Wish the battery charge lasted a bit longer than 3 days, but not a huge issue.
Michael V. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Compared readings with other devices and it matched within 2%. Very helpful health monitoring.
Patrick R. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker
Fits great Pretty accurate reading. Love it.
David G. 5/5 Verified
Fitaos R05 Blood Glucose & SpO2 Smart Ring - Sleep & HRV Tracker