No one can imagine that these small mechanism can costs as much as HK$40000! There are many watch that needed these mechanism in order to revive the Tru Beat in their Rolex.
I am fortunate to find one in very good condition where the Tru beat still jump to the beat and behave like a modern day quartz watch. In fact, I have seen 2 nice condition Tru Beat that is functioning at a small vintage watch shop near my home. It was a difficult choice as one has a nicer movement (my current one) while the other has a perfect dial. In the end, owing to the price differences, I have chosen the former, which has some aging on dial but with perfect 1040 movement.
The movement is in a pristine condition since it production day of 1956, one year younger then my 6610.
In summary, the Trubeat is using Calibre 1040, 25 jewels, screw down case back, three-part case, plastic crystal, screw-down case back, Twinlockcrown, stainless steel Rolex Oyster bracelet (ref. 7205), case,Diameter: 35 mm.
Enjoy! Real blessed!