The overhaul refers to repairing it after dismantling a clock, and having checked it.
In the case of a clock of Rolex, I will perform the overhaul even at least once in five years.3-4 once a year wants to reach if possibleですね.
When it is said why periodical overhaul is necessary for a clock, this is because a burden suffers from each part while I use the clock.
As for most clocks of Rolex in particular, a mechanical self-winding watch movement is adopted. Because various parts are combined as for the mechanical clock precisely and work, steady maintenance is necessary.
Overhaul is necessary for a clock so that a human being needs a periodic medical examination so that car inspection is necessary for a carSo I do it. The inside of the clock may catch the damage even if I do not understand it visually.
I may think in a question, though, what kind of thing you perform by overhaul concretely. The main processes of the overhaul are as follows.