For clocks there is the S.F.Ferry building
tower clock which is running smoothly thanks to NAWCC member Dorian Clair. There is an exquisite McClintock street clock in front of the old Shreve building on Market St. although I'm not sure whether it's currently in restored or vandalized condition . For watches you could shop sporty clothes at the Royal Robbins outlet on Gilman St.(between 6th&7th) in Berkeley. The outdoorsy Royal is a direct descendant of the former head of Waltham watch co. but also the store sits on the site of the former Berkeley watch Co..
If you're staying in S.F. be sure to pack a light jacket for the post 6PM part of the day.
It will be warm and sunny all day but the fog rolls in to cool things off in the evening.