"NATO Restricted" is the lowest-tier of NATO classification. It does not require security clearance to access, and mostly exists to prevent the leaking of information.
So most NATO people will have access to this level, so it's where most devices will be sold.
This deserves to be the top comment.
Commercial products don't generally go from unclass to TS/SCI in one jump. We should anticipate this isn't the end, given how these types of contracts are generally structured.
+1 I came to make the same point. Basically unclassified. Pretty weak press release!