I don't know all the answers (I've only had the device for 3 days), but here's as much as I can help:

- Bluetooth speaker connection is no problem, network speaker I can't say.
- SBB connection search didn't work (but time estimation did; and for car connection also indication of main motorways; e.g. Zurich-Lucerne: A4 and A15, 48 min)
- I was able to query NFL results in English
- The power supply is EU standard (like the mobile phone).