| Version | Refurbished |
|---|---|
| Brand | Wellue |
| Sensor Technology | Infrared Sensor |
| Type | Ring Oximeter |
| Display Type | OLED |
| Power Source | Rechargeable Battery |
| Manufacturer Warranty | 1 Year |
| Color | Black |
| Model | O2Ring |
| Features | Smartphone Compatible |
| Product Line | O2Ring |
Check the listing for details. Wellue O2 Ring Pulse Oximeter O2Ring Oxygen Monitor with Free APP and PC Reports. Color: Black, Condition: Used. Listed at 99.99 USD. O2Ring continuously monitors blood oxygen saturation (SpO2) and heart rate to help detect sleep apnea. When sleep apnea occurs (a pause or stop in breathing), blood oxygen levels drop. O2Ring detects this drop in oxygen saturation along with heart rate changes and alerts the user through vibration.
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