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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 reviewsReal-World Testing
30 days of real-world testing
Recently Updated
Updated Nov 17, 2025
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 Casey Dray
Casey Dray
Expert ReviewerSenior Staff Writer
Casey covers measurement tools and the software that captures their data for Review Atlas. She values open formats, clear exports, and hardware that won’t strand critical readings. Her field‑ready kits power better decisions on job sites and in labs.
Industrial ScientificSoftware
View Full ProfileHow We Tested This Product
Our rigorous, independent testing process
Testing Period
30 days
Tested By
Casey Dray
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 Industrial & Scientific testing methodology
Last updated: November 17, 2025
|Independently tested and reviewed