It is compatible with any ANT+ heart rate strap. I have been using it for mountain biking in all weathers and despite many prangs over the years it hasn't picked up any damage - it seems very robust and water resistant. There are lots of light marks on screen and body from use but no cracks or damage or deep scratches that would affect normal use of the screen. Original charger with slot in UK or European plug fitting. Bar/stem mount with rubber fixings.
Manuals (the useful manual is the full one you can download from Garmin online). I have done a factory reset so hopefully my data has been scrubbed clean and it is ready to go.
I had loaded the Open Streetmap files for UK and France. Hopefully these are still there as they are much better than the Garmin mapping. If not, they are a free download.