23.01.2013, 11:47
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Цитата:
ETA 2836-2
Diameter: 25.60 mm
Height: 5.06
Jewels: 17, 21, 25
Hz: 4
VPH: 28,800
Features: hour, minute, sweep second, ball bearing self-winding, date and day, stop second device, ETACHRON
It is from stock available with 17, 21 or 25 jewels (although 25 jewels are the standard). But the base movement has always 17 jewels.
4 jewels can be ordered for the self-winding gear, and another 4 for the clicks in the two reversing wheels.
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Вот как-то так... 
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