I am really disappointed to know that my fenix 6s I bought in Japan hasno Pulse Ox feature on it. There is no advertisement of the product that some features are not available in some countries, but I got email from garmin product support ([email protected])
.,...
After doing some research on the Japanese version of the fenix 6S, I discovered that it unfortunately does not come with the Pulse Ox feature due to local laws. If you have further questions about the watch, I will need to transfer you to another team that supports the Asian software.
Thank you for choosing Garmin,
Heather
Product Support
Garmin International
.....
So, for you wondering why your fenix 6s does not record Pulse Ox data, you may stop searching. And stop buying garmin product as the products are not as what they are advertised, and we should be cautious on this matter in the future