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Wellue

Wellue O2Ring Pulse Oximter, Bluetooth SPO2 Blood Oxygen Saturation Monitor - Wearable O2 Ring Sensor with Vibration Reminder, Free APP & PC Report, Rechargeable

4.0
Based on 1,768 reviews
Real-World Testing
30 days of real-world testing
Amazon
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Technical Specifications

Complete product details

Package Dimensions
3.62 x 3.62 x 2.76 inches; 0.53 ounces
Batteries
1 Lithium Polymer batteries required. (included)
Date First Available
September 3, 2020
Manufacturer
Viatomtech
ASIN
B08HDGBF7P
Best Sellers Rank
See Top 100 in Health & Household
Brand
Wellue
Color
black
Measuring Range
70% - 99% SpO2
Number of Batteries
1 Lithium Polymer batteries required. (included)
Model Name
O2Ring

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About the Author

Expert analysis by Adisa Bello

Adisa Bello

Adisa Bello

Expert Reviewer

Associate Editor

From Lagos, Adisa reviews fitness wearables and recovery tools for Review Atlas. He focuses on sensor accuracy, language support, and battery life in hot, busy conditions—real tests for real users.

Health Personal CareSports
View Full Profile

How We Tested This Product

Our rigorous, independent testing process

Testing Period
30 days
Tested By
Adisa Bello

Our Testing Process

  • We purchase all products at full retail price to ensure unbiased testing
  • Products are tested in real-world conditions matching everyday use
  • Our experts conduct both objective measurements and subjective evaluations
  • Reviews are regularly updated as new products enter the market
  • Tested according to our Activity, Health & Wellness Monitors testing methodology
Learn more about our testing methodology
Last updated: November 17, 2025
Independently tested and reviewed