notes: Apple may launch the Apple Watch Series 11 in September, so I recommend you stick with the Series 10.
The Watch Series 10 (8/10, Wired recommended) and Series 9 and Watch Ultra 2, gained perception of blood oxygen through a software update in August 2025, after a long-term suspension of sales due to patent intrusion cases. The feature has been redesigned to browse patents. To view your blood oxygen, you updated your paired iPhone to iOS 18.6.1 and your Apple Watch to WatchOS 11.6.1. You will see sensor data in the respiratory section of the health app, not on the watch itself.
This is a little annoying, but with the new health updates in WatchOS 11 and WatchOS 26, you may be checking out health apps more often. Now, this is the best Apple watch without warning. Excellent health features (differences in breathing) Use the accelerometer of this series 10 to notify you of sleep apnea, otherwise a disruptive sleep test is required to diagnose. This is the perfect health feature to monitor through wearables that are constantly worn.
There are also a lot of hardware and software upgrades. It is thinner and lighter, making it more comfortable to wear when sleeping and charges quickly, so you can track more activities during the day. I find that every morning in the shower I can easily put it on a fast charger for 20 to 30 minutes. It also has a lot of new features that focus on water sports, including water temperature, which is very important in where I live because when a lot of people jump into too cold water, many people become powerless. Now, this is the best Apple watch without warning.
| Specifications and functions |
|---|
| Case size: 42mm or 46mm |
| Blood oxygen sensing: Yes |
| Second generation ultra-wideband chip: Yes |
| Skin temperature sensing: Yes |
| Crash detection: Yes |
| Autumn Testing: Yes |
