Pulse oximeter sensor in US edition?

Yes, in the U.S. version of the target model, including the Apple Watch Series 10, the function of the pulse oximeter (blood oxygen wellness) is installed with the sensor itself, but it is disabled by the software or The function is restricted.

This is not a hardware difference, but mainly to respond to legal action related to patent litigation in the United States.

Detailed explanation

The hardware is the same: the U.S. and foreign versions of the Apple Watch Series 10 (and Series 9, Ultra 2) are physically equipped with the same blood oxygen sensor.

Controlled by software: To circumvent the import ban in the United States, Apple has disabled the functionality of the target product at the software (watchOS) level. As a result, the function that is said to be a patent infringement is no longer available.

Revival of features (conditional): After August 14, 2025, Apple will begin offering "redesigned blood oxygen measurement capabilities" with iOS and watchOS software updates for eligible models sold in the United States. In this new method, it is said that patent infringement is avoided by performing part of the sensor data analysis on the paired iPhone side.

The country of purchase is important: The important point is that the "country of origin" where the watch was sold determines the state of function. Watches with serial numbers purchased in the United States will remain limited in their blood oxygen function unless the update is applied, even if they are taken outside the United States.

In conclusion, the sensor of the US version of the Apple Watch Series 10 is physically present, but whether its functionality is available depends on the region where it was sold and the version of the software applied.From Gkps.