As I wrote: it does work great where it does work. I'd definitely have gone that route if it worked where I live. It's just that the marketing that it works "all around the world" falls pretty short, IMO.

I kinda wish the German transmitter had more range (like the US one does) but even the blog I linked to, you can see someone in the continental US who needs to hang their watch from their window blinds for syncing to work reliably.

I even looked into hacking my own transmitter (https://github.com/hzeller/txtempus) before giving up and just buying one of the models with bluetooth phone sync.