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November 2026
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References
Calibres
IWC 75320
Calibre
IWC 75320
In 17 watches by IWC Schaffhausen
Kind
Automatic
Beat
28,800 beats an hour (4 Hz)
Power reserve
44 hours
Jewels
25
Watches from
2011 to 2019
Watches that use it
All 17 watches
5
photos
IWC Schaffhausen
2019–present
Portofino Chronograph
IW391035
5
photos
IWC Schaffhausen
2019–present
Portofino Chronograph
IW391036
5
photos
IWC Schaffhausen
2011–2015
Portofino Chronograph
IW391037
Other IWC calibres
All calibres
IWC 79261
129 watches
IWC 79230
93 watches
IWC 30110
88 watches
IWC 79350
74 watches
IWC 35111
70 watches
IWC 79320
66 watches
IWC 89361
63 watches
IWC 37521
46 watches
IWC 7922
45 watches
IWC 79251
42 watches
IWC 69385
36 watches
IWC 32111
34 watches