Someone at Seiko obviously thought a flip-up chronograph made sense. But using pushers at the top like a stopwatch, while strapped on a wrist, was virtually impossible. After I bought it I thought, “this is nuts”.

Lots of cool castings in the case design. 
Bezel rotates to lock it in closed location
I’m surprised I can’t find more images of it in my archives, but I only kept it a short time.
As they say, Live and (fail to) learn.
Cazalea