However, straps that fit 44mm/45mm/46mm Apple Watch models will also work with the ... It’s placed on the upper arm, where many people keep their smartphones, and allows the heart rate monitor ...

It’s quite astonishing. The Apple Watch Series 9 retains the 41mm and 45mm case sizes introduced with the Series 7 in 2021, meaning older bands will remain compatible with the latest smartwatch.

The design also received a refresh with softer and more rounded edges and new sizes of 41mm and 45mm. The Apple Watch 7 also includes blood oxygen monitoring, an ECG app, and activity tracking.

Here’s how it works. If you're looking to buy one of the best Apple Watch models, but you don't know where to start, you've come to the right place. I've been reviewing Apple Watches since they ...