Indeed the first point of comparison to the Dead Second complication is quartz. I prefer a mechanical watch like most here

so I was curious about the evolution into second counting on this watch. It is a very interesting mechanical story, the movement impressed me by its simplicity on doing something that for mechanical watches is hard. But also I think that the second time unit is the smallest time unit with use to the regular man. An illusion of greater time accuracy as it stops right on the second. I like it.
I think it was very smart of JLC to make the watches available at the same time as their marketing. Cheers