Yasin Hasan/Shutterstock While it has been over a decade since Apple started selling smartwatches, Google's own smartwatch hardware debuted less than four years ago, after it  acquired Fitbit  – a brand known for its fitness trackers and smartwatches. That said, Google has been working on smartwatch technologies for almost as long as Apple, via its involvement with Wear OS (and as Android Wear in its previous avatar). Despite both companies offering some of the best smartwatches, the Pixel Watch hardware and the various Apple Watch models are locked to their respective ecosystems, making the Pixel smartwatches most suitable for Android owners and the Apple Watch models for iPhone owners. However, the ecosystem restrictions aside, the Apple Watch and the Pixel Watch lineups include a number of features that set them apart from each other and give them an advantage over the other.…