For Android Wear OS If you take a look onSamsung web siteand look for the operating system (OS) if it says Wear OSThen the watch should work with sideloading it onto your watch as shown in the video. If you do not have an option to download wear OS (wear installer) from the play store maybe look for (Wear Installer 2) instead.
Sideload to a Android watch Wear OS operating system
There seems to be a lot of confusions now with Samsung coming back to Android wear from there Tizan OS so if its a Galaxy 4 or Galaxy 5 then the video above is still going to work except that now instead of it being Wear Installer its updated to wear Installer 2 onto your mobile. There is no need for it to be wear installer 2 on your watch!
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