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Only the garmin is integrated via bluetooth. There are chinese clones of the navdy but haven't found a way to purchase them.

[exhilaration]

There's a comment above (https://news.ycombinator.com/item?id=12790191) that mentions one of the Chinese clones by name: Carrobot. That might help you track one down.

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That's the one, I couldn't for the life of me remember the name of it. Not worth tracking them down though after I found out language barrier would be impossible to overcome.