Operating system

The best smartwatches have the best Operating Systems that power them. So, when you are looking for the best smartwatch to buy, your search has to be based around the OS. The thing you must know here is, some smartwatch manufacturing brands use their own OS, for example - Apple uses its own OS named Watch OS in its smartwatches. While many other smartwatch brands use Android OS for their smartwatches. Do your research before deciding which OS you want to go for.