The most annoying thing about using a wearable device is downloading updates, which rely heavily on Bluetooth file transfers. This makes using watches, audio products, and more feel slow. This has gradually changed with updates being downloadable over WiFi or mobile data.
Samsung Galaxy Watch is among those that support this feature, where after the One UI for Watch update based on Wear OS 5.0, it allows users to download updates over WiFi or mobile data via eSIM. More interestingly, the watch also doesn't need to be connected to a charger like the Apple Watch.
This update also enables the Cross-Device Services feature, where phone calls and Internet connections can be shared if each device uses the same Google account. In many smartwatches and other devices, downloading updates the fastest is only on Samsung so far. If you're a Pixel Watch 3 user, this is a good thing that is very useful.