I am looking at buying a TOMTOM ADVENTURER watch. I would like some info regarding the maps side, I do a lot of photography of flora and insects and it would be nice to just wander and have where I have walked tracked on an OS map. I have OS maps on my phone from the areas I use which I got by subscribing to OS, they are very detailed and it would be great if I could have routes and way-points showing up on my map so I could document locations of pictures I have taken.
How does the whole system work?
I cannot find much about it. I really want to go out without my phone at times and just have where I have been laid over an OS map or something similar, is this possible and how accurate is the GPS?