Perrelet P-181 Mode D'emploi page 11

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t
eChniCal Data on the movement
– Thickness of the basic movement, oscillating weight
included : 5,15 mm
– Fitting diameter : 31,60 mm
– Total diameter of the movement : 31,60 mm
– Vibrations / hour : 28'800 (4 Hz)
– Jewelling : 21 rubies
– Autonomy of the movement, fully wound : more than
40 hours
– Automatic winding mechanism with oscillating weight
fitted on ball bearing
– "Incabloc" shock-resistance system for the balance wheel
– Accurate time setting system
CALIBRE P- 181 | 9