Sinn 240 St

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Sinn 240 St
© Sinn

Model 240 is an automatic watch from Sinn produced since 2015.


Introduced at Baselworld in 2015, Model 240 features a similar case to the legendary Model 140 Space Chronograph but with a simpler movement and design. Like its predecessor, it has an inner rotating bezel controlled by a crown, though this is moved from 10:00 to 2:00. The bezel is numbered in 60 increments with numerals at 5 through 55, clockwise. The dial also features day and date windows at 3:00.

The basic Model 240 St was augmented in 2017 with Model 240 St GZ with a tide indicator on the inner bezel. Another special version, Model 240 C, was produced for Chronos magazine in a limited edition of 100 examples. This model features a 12 hour bezel that can be used to show a second timezone.

See Also


  • 240 C (2017-2018) - 12 hour bezel, special edition for Chronos magazine, limited to 100 pieces
  • 240 St (2015-present) - Standard 60 minute bezel
  • 240 St GZ (2017-present) - Tide gauge bezel


Self-winding movement SW 220-1, 28,800 A/h
26 jewels
Hacking seconds
Shock proof according to DIN 8308
Antimagnetic according to DIN 8309


Stainless steel
Ø 43.0 mm, Gesamthöhe 11,0 mm
Sapphire crystal, anti-reflective treatment on both sides
Sapphire crystal caseback, antireflective on the interior
Screw-in crown, screw-in back
Waterproof to 20 atm


Mat black
Indexes with luminous colour
Hours, minutes and seconds hand with luminous colour


Hours, minutes, central seconds
Day of week, date


Leather strap
Optional: stainless steel bracelet


2 years


1350,00 € with leather strap (2015)
1505,00 € with stainless steel bracelet