|Diameter:||31.00 mm (14 ligne)|
|Complications:||2-Button, Cam Switching Chronograph, Chronograph, Date, Hand Winding, Quick Date Correction|
|Hands:||12 Hour Chronograph Hand at 9:00, 30 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Date Window at 4:30, Small Seconds Hand at 6:00|
|Distinguishing Technical Characteristics|
Clockwise Balance Cock
Cal. 7740 is a cam-operated chronograph movement with 30 minute and 12 hour counters and date. The similar Cal. 7741 adds a central 24 hour (GMT) hand.