Specialist dealers


  • 240 C

    Exclusive special edition for the specialist watch magazine Chronos.

    240 C
  • 240 C
  • 240 C
  • 240 C
  • 240 C
  • 240 C


Warranty period leer years

Warranty Statement


Product number: 240.021 PDF

240 C

This model is no longer available in our current range.
240 C

In collaboration with the specialist watch magazine Chronos published by Ebner Verlag, we are presenting a special limited edition of 100 240 C watches in a highly unique design. 

Key functions and clarity are the all-important features of the 240 C. Its classic design is based on traditional styles, further underlined by the silver electroplated rotating bezel and the satinized case with polished sides. With a diameter of 43 mm, the 240 C also boasts unique characteristics which distinguish it as a SINN watch.  

Most notable is the interior bezel with a 12-hour display, which facilitates the recording of time and can be used to display a second time zone. Perfect readability, even at night, is ensured by the luminous hands and indices. The crowns are equipped with the D3-System developed by Sinn Spezialuhren. The crown shaft is mounted directly in a finely finished case aperture, creating a perfect seal to the case (the name D3 comes from the German <i>direkt doppelt dichtend</i>, meaning direct double sealing). The 240 C also features the date and weekday, which can be displayed in German or English simply by adjusting the crown. The 240 C is pressure-resistant up to 10 bar and resistant to low pressure.

Special characteristics
  • Exclusive special edition for the specialist watch magazine Chronos
  • Limited to 100 pieces
  • Case made of stainless steel, satinized/polished
  • Second time zones on a 12-hour basis
  • Sapphire crystal glass
  • Pressure-resistant to 10 bar
  • Low pressure resistant

Technical details

SW 220-1
Self-winding mechanism
26 bearing jewels
28,800 semi-oscillations per hour
Second stop function for accurate time adjustment
Shock resistant as per DIN ISO 1413
Anti-magnetic as per DIN 8309

The information on the mechanical movement corresponds to the current production situation in Frankfurt am Main. Due to technical changes, it may happen in individual cases that stock items of our sales partners deviate from this information.

Case made of stainless steel, satinized/polished
Sapphire crystal glass in front, anti-reflective on both sides
Case back screw-fastened
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant up to 10 bar
Low pressure resistant
Hours, minutes, seconds
Date date
Day of the week display
Second time zones on a 12-hour basis
SINN Technologies
Crowns with D3-System
Dimensions and Weight
Case width 43 mm
Band lug width: 22 mm
Case thickness: 11 mm
Weight without strap: 85 gramme
Dial and Hands
Matte black dial
Indices coated with luminescent colour
Hour- and minute hand coated with luminescent colour
Silver electroplated interior bezel

240 C configure

Watch strap
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Warranty statement

In addition to the statutory warranty, we – Sinn Spezialuhren GmbH, Wilhelm-Fay-Strasse 21, 65936 Frankfurt am Main – provide a manufacturer’s warranty against material and manufacturing defects for the watch 240 C.

The warranty period is leer years.

The warranty period is calculated from the invoice date.

Our warranty is applicable worldwide.

If you wish to make a warranty claim, we will repair the watch for you at no additional cost.

Warranty claims are excluded in the event of damage caused by:

  • Improper use
  • Repairs or attempted repairs which were not carried out by us or our authorised partners. A list of authorised partners can be found in the Sales and Service Partners menu on our website
  • Signs of wear and tear, especially to straps
  • The use of force (blows, knocks, impact)

Please inform us – Sinn Spezialuhren GmbH by phone +49 (0) 69/97 84 14-400 or email – as soon as you are aware of the potential warranty claim to avoid further damage. In order to approve the warranty, we will need the watch and proof of purchase (invoice) with a detailed description of the damage.

In the event of a warranty claim, we bear the costs of sending and returning the watch as well as the transport risk, provided that the transport is carried out by the transport company specified by us and the watch has been securely packaged. Please contact us by phone +49 (0) 69/97 84 14-400 or email Otherwise, as the customer, you will bear the costs of the shipment and the transport risk.

Any costs incurred for customs duties, import duties and other fees incurred when the watch is returned to the recipient country must be borne by the recipient.

We provide this warranty in addition to your existing statutory rights for defects. These rights are not restricted by the warranty and they can be exercised free of charge.

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