Movement
Calibre 13.33Z
← Back to all Calibres1913 – 1935
Lignes
13
Mounting Diameter
29
Thickness
6
Frequency (vph)
18,000
Jewels
17
Power Reserve
38
Complication
Chronograph
Power
Manual
Shape
Round
Size
Large
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Technical Diagram
Notes
The 13.33Z was the first chronograph calibre ever produced specifically for wristwatch use. It was originally a monopusher design though later multiple pusher versions were made. It has an instantaneous jumping minutes and a 30 minute counter. Some models have 18 jewels. An example with flyback functionality from 1929 was found. The movement went through several variations in production over time.