Hi manu1027,
Smart Watches use different technologies and have different capabilities. Therefore, there is no common framework to work on. Let's see the case for Tizen (used by many manufacturers like Samsung's Gear S3). Here you have the option to run a Hybrid application or a Native application. Hybrid will be based on HTML, but for Tizen you have specific JavaScript libraries and html tags to make the application look better on round or squared shaped watches. Therefore, not all HTML/JavaScript development frameworks will behave the same - causing a real problem for developers. On the other hand, you have C/C++ as language for the Native applications. It poses a much better performance while compared to HTML applications, not to mention the pixel-perfect design.
Now let's look at the other side - Apple. Their OS is called watchOS and its SDK will focus on ObjectiveC language or SwiftUI. Both resembles C++/JavaScript development styles, but they are not at all compatible.
I'm not speaking on behalf of SAP, but I find it really hard to have any framework that could be compatible with both approaches - not to mention other players in the smart watch market that would themselves use any number of different SDKs.
Therefore, I was not able to find any tutorial related to smart watch development in SAP - sorry.
With that said: You could still use your preferred watch SDK to talk with SCP applications, after all they are all based on HTTP protocol for communications (even while connected to your smartphone via Bluetooth for connectivity with the internet).
In the past, there has been some attempts to have some on-premise Netweaver Portal information on Smart Watches, but I don't think it was a huge hit.
Hope this information helps.
Best regards,
Ivan
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