The Apple Watch Series 9 follows in most other recent Apple releases' footsteps, in that the changes and upgrades from previous iterations are incremental rather than revolutionary. It was the same story with the iPhone 15 and 15 Pro, where the main changes are a slightly more powerful processor underpinning the performance along with a few superficial function upgrades. While the iPhone 15 has the Action Button, the Watch gets Double Tap.
But what is that? And does it make (or keep, depending on your personal viewpoint) it an essential accessory for any Apple owner? And does it make it a mandatory purchase over the Watch 8? (No, if you're not an Apple owner, it's still not compatible with anything other than iOS, but we have a list of Apple Watch alternatives for you...)
