Rumors about the new Watch Series 9 predicted it would have an upgraded heart rate sensor. Did that happen?
Hello bicycledave,
Yes, the Apple Watch series 9 features a third-generation optical heart sensor, while the earlier models had a second-generation optical heart sensor.
The "Technology" section in the following article confirms it: Apple Watch - Compare Models - Apple.
Thanks. I’m still a bit confused because according to this Apple site, the third-generation optical heart sensor was included in the Apple Watch Series 7 introduced in 2021: Apple Watch Series 7 - Technical Specifications (TM)
You are right: the third-generation optical heart sensor was introduced with Apple Watch Series 6. The Apple Watch SE still has the second-generation optical heart sensor. This is what got me confused.
Here is the link with the specifications of Series 7:
Apple Watch Series 7 - Technical Specifications (TM)
Does Watch Series 9 have an upgraded heart sensor?
