Connect to Memobird GT1 without using SDK

Connect to Memobird GT1 without using SDK

I just realized that the bluetooth connectivity solution provided by Intretech involves using a SDK, which can run on either Anrdoid or iOS.
However, I was planning to use it on a microcontroller, so the SDK method will not work.
Through the RFConnect app, I can see a few services. Could I make use of these services to do the printing? If so, how can I do that?