Mcdevito75 here, Hello David, Tag Heur a very fine watch, First I would make sure it is the seconds hand that stopped and not the Chrono. hand, I would also go over any instructions that came with the watch, about the light scratches on the saphire crystal, the crystal is scratch resistant to a point, and can occur almost anyway, rubbing up against something harder than the crystal itself, (certain Stones and materials) even if your in a dusty place scratches can occur on any crystal. Check with your warrantee, you should be covered.