As others have mentioned, TomTom have dropped support for all their wearable lines in the USA. Looks like Europe will be next... so buy it for what it is, but don't expect much in the way for support on these.
Any good deals on tomtom watch that includes headphones?
You'll need the Spark 3 for this. You can create/download gpx files which will show a very basic map however it is very handy for confirming that you are on the correct route. I used it at the weekend and had the heart rate function on and the battery did drain quite quickly.
Whoops, my fault. I assumed that it didn't have HR. GPS is great on the 35. Fixes location almost always within a minute or so. I've had numerous older Garmins, the Tomtom and a Suunto and 35 is the best in that regard. I've only had a hiccup once in the 7 months I've owned it when it completely froze and then stopped getting a fix. A hard reset rectified that. Good luck
can these be used for treking? I mean by that will the maps show the path?