![Apple Watch tells me my blood oxygen drops during sleep. I highly doubt this is accurate. Getting a sleep study tonight to be sure. : r/AppleWatch Apple Watch tells me my blood oxygen drops during sleep. I highly doubt this is accurate. Getting a sleep study tonight to be sure. : r/AppleWatch](https://i.redd.it/tf4j0fpe44xa1.jpg)
Apple Watch tells me my blood oxygen drops during sleep. I highly doubt this is accurate. Getting a sleep study tonight to be sure. : r/AppleWatch
![Comparison of SpO2 and heart rate values on Apple Watch and conventional commercial oximeters devices in patients with lung disease | Scientific Reports Comparison of SpO2 and heart rate values on Apple Watch and conventional commercial oximeters devices in patients with lung disease | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-021-98453-3/MediaObjects/41598_2021_98453_Fig1_HTML.png)
Comparison of SpO2 and heart rate values on Apple Watch and conventional commercial oximeters devices in patients with lung disease | Scientific Reports
Investigating the accuracy of blood oxygen saturation measurements in common consumer smartwatches | PLOS Digital Health
![Apple Watch Series 9 review: Don't settle for the less expensive models this year. Here's why | ZDNET Apple Watch Series 9 review: Don't settle for the less expensive models this year. Here's why | ZDNET](https://www.zdnet.com/a/img/resize/a5dfca622c7aa7b09e07f78b3e8639aa762dc60b/2023/11/16/af041553-6f8c-470f-9a27-a6f24655d3f6/dsc02688-enhanced-nr.jpg?auto=webp&width=1280)