I had a very, very nice all-original example but unfortunately sold it to fund another purchase.
Mine was only about 1.5µSv/hour on the Geigercounter only when I placed it directly onto the crystal, about 2 inches away the radiation was not measurable anymore.
I think 7µSv/hour is quite high, but if you only wear in every now and then I would not think about it too much.
Lovely watch anyway, wear it in good health!