O2Ring Wearable Pulse Oximeter with Alarm Review — Is It Worth It? [2026]
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O2Ring Wearable Pulse Oximeter with Alarm
A soft silicone ring that tracks blood oxygen and heart rate all night and vibrates if the numbers drop.
Is the O2Ring worth buying?
For overnight monitoring, yes. Clip-style fingertip oximeters are uncomfortable to sleep in, and the ring design is its whole point: a soft silicone sensor that stays put without squeezing. It stores data on the ring itself, syncs to the app, and vibrates your finger when oxygen or heart rate crosses a threshold you set. It is not a diagnostic tool.
A ring instead of a clip
The O2Ring (model PO2, made by Viatomtech) is worn on a finger and monitors continuously. The listing says it is licensed by Health Canada. This is general information, not medical advice; talk to a doctor about any heart or blood pressure concern.
What the O2Ring does
Continuous SpO2 and heart rate
Trend reports show up in the app or PC software, with PDF and CSV export.
Vibration alarm
It vibrates your finger on abnormal oxygen or heart rate readings, and beeps your phone if connected. Thresholds are adjustable.
Works without your phone
Built-in memory lets it record on its own and sync later. Storage in the app is unlimited at no extra cost.
Soft silicone ring
A patented ring sensor that relieves fingertip pressure so you can wear it continuously. Light and small.
Full spec sheet
| Measures | SpO2 and heart rate |
| Wear style | Silicone ring sensor |
| Alerts | Finger vibration; phone beep when connected |
| Thresholds | Adjustable in app |
| Storage | Built-in memory, app sync, PC cable sync |
| Reports | PDF / CSV |
| Manufacturer | Viatomtech |
| Licensing | Health Canada (per listing) |
Pros & Cons
Pros
- Comfortable for sleep.
- Works offline with built-in memory.
- Adjustable alarms.
- PDF/CSV reports.
- Unlimited app storage.
Cons
- Price is higher than fingertip oximeters.
- Ring size and fit depends on your finger.
- Not a diagnostic device.
- Needs the app for full reports.
Answers before you buy
Can I wear it overnight?
Does it need my phone?
Can I export data?
Who makes it?
Is it a medical diagnosis tool?
The better way to monitor oxygen at night
If comfort matters, this wins over clip oximeters. Editorial score.
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