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Mechanical watches of 24 caliber
Periods of balance fluctuations 0,4 sec;
Average dayly move at the temperature (20+-5) - from 20 to 40 sec/day;
Central trotting seconds hand
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Mechanism 2409
Heights of mechanism - 3,45 mm
Number of ruby stones - 21;
Term of energy autonomy - not less than 45 hours
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Mechanism 2414
Heights of mechanism - 4,05 mm;
Number of ruby stones - 21;
Calendar snap action devices;
Adjustment of a shown date by moving the arrows;
Term of energy autonomy not less than 42 hours
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Mechanism 2416
Heights of mechanism - 6,12 mm;
Number of ruby stones - 24;
Self-winding with reversional muffs;
Term of energy autonomy not less than 39 hours
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