I think this is more of a military watch than a proper diver but I thought you guys might find it interesting.
It’s a special limited edition of 100 pieces of Sinn’s 240 C in a highly unique design made in collaboration with the specialist watch magazine, Chronos published by Ebner Verlag.
Its classic design is based on traditional styles, further underscored by its silver electroplated rotational timing-bezel and its sanitized 43mm case with polished sides. The 240 C boasts a number of unique characteristics that distinguish it as a SINN watch.
Most notably is its internal bezel with a 12-hour display, which facilitates the recording of time and can also be used to display a second time-zone. Excellent readability, even at night, is ensured by the luminous hands and markers.
The 240 C’s two crowns are equipped with the Sinn-developed D3-System - where 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 direkt doppelt dichtend, 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.
It is pressure-resistant up to 10 bar - meeting the technical requirements for waterproofness, as set out in standard DIN 8310.
In addition to this the 240 C features include: a Sapphire crystal with anti-reflective on both sides, is low pressure resistance, shock-resistant as per DIN 8308 and anti-magnetic as per DIN 8309.