Sinn (Germany) 240 St – Ref. 240.010 – A Sporty Watch With Inner Pilot’s Bezel On Bracelet

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1 in stock

Key functions and clarity are the all-important features of the 240 St. With its classic design based on traditional styles, the 43 mm diameter 240 St is distinguished by those unique characteristics which mark it clearly as a Sinn watch. These include a resistance to low pressure and pressure resistance up to 10 bar. The interior pilot’s bezel with luminous triangular main marker enables precise monitoring of defined periods of time. The case made of bead-blasted stainless steel features a sapphire crystal glass. Perfect readability, even at night, is ensured by the luminous hands and indices. The 240 St also features the date and day of the week, which can be displayed in German or English simply by adjusting the crown. Listed price includes the solid steel bracelet with safety folding clasp and diving extension as in the main photo. Other photos showing the watch on other strap types are for presentation only. If you prefer a different type of strap, feel free to contact us for availability.”

Localtime Ltd (Cyprus) is an Authorised Distributor for Sinn Spezialuhren (Germany). Contact us for any models you do not see listed here.



  • Sellita Cal. SW 220-1
  • Self-winding mechanism (automatic)
  • 26 bearing jewels
  • 28,800 semi-oscillations per hour
  • Hand adjustment with seconds stop function
  • Anti-magnetic as per DIN 8309


  • Case made of stainless steel, bead-blasted
  • Sapphire crystal glass in front, anti-reflective on both sides
  • Transparent case back made of sapphire crystal glass, anti-reflective on the interior
  • Screw-fastened case back
  • Meets the technical requirements for waterproofness, as set out in standard DIN 8310
  • Waterproof and pressure-resistant to 10 bar
  • Low pressure resistant


  • Hours, minutes, seconds
  • Date display
  • Day of the week display
  • Interior pilot’s bezel with luminous key mark

Sinn Technologies:

  • Crowns with D3-System*

Dimensions And Weight:

  • Case diameter: 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, minute and second hand coated with luminescent colour

Warranty: 2 years

Straps: We carry a large selection of Sinn replacement straps (with or without buckles), listed separately in our store.

* EXPLANATION OF D3-System Crowns: In our D3-System watches, the push-piece pins and crown shafts are mounted directly in a fine-finished case aperture, creating a perfect seal to the case. In conventional designs, the push-piece pin and crown shaft are mounted in the case hole inside a tube insert. The required tube seal not only represents an additional potential source of gas diffusion (see Ar-Dehumidifying Technology), but careless handling can also lead to loss of water resistance with this design. This is because the push-piece pin and the crown shaft can bend in the tube if exposed to lateral knocks, permitting moisture to penetrate. This is a risk which also exists in screwable crowns and push-pieces when they are unscrewed to make an adjustment. The D3-System permits the crown and push-piece to be integrated in the case, providing reliable protection from lateral knocks and the penetration of dust or moisture.


Sinn (Germany)

Production Period

Brand New


240 St – Ref. 240.010


Time, Day & Date, Inner Rotating Elapsed Time Bezel




26j Sellita Cal. SW 220-1

Case Material

Stainless Steel

Case Back

Stainless Steel – Exhibition Sapphire

Case Size

43mm case, excluding the crowns at 2h & 4h

Lug Width



Brand New – 2 Years Manufacturer's Warranty


FREE (Express & Fully Insured)