Great watch, got mine brand spanking new from Argos for 79quid a few months ago. Lovely build and feature set.
I guarantee that the phone you're probably using now has many, many more faecal bacteria on the screen than this will - even if it hasn't been cleaned prior to resale, which would surprise me, it'll have been sitting in storage long enough for any nasties to have died.
@reindeer333's sausage? (cheeky)