Frankfurt am Main-based watchmaker Sinn Spezialuhren have a reputation for building tough aviation and diving-themed watches, and the Sinn 936 Chronograph is certainly no exception. Featuring a specially-hardened, “TEGIMENT” steel case, magnetic field protection up to 80,000 A/m (approximately 1,000 Gauss) water resistance of 100m, and shock resistance as per DIN ISO 1413, this watch is ready for whatever the wearer can throw at it and then some. The bi-compax design is also eminently legible, with both chronograph hands in red to make them stand out from the rest of the dial.


Brand: Sinn Spezialuhren
Model: 936
Dimensions: 43mm wide x 15mm thick
Lug Width: 22mm
Case Material: Stainless steel, satin/polished with nickel-free caseback
Crystal/Lens: Sapphire crystal, anti-reflective on both sides
Movement: Sinn SZ05, modified Valjoux 7750 with automatic winding, date display, and two-register chronograph functions
Frequency: 28,800bph (4Hz)
Power Reserve: Unspecified, but a non-modified Valjoux 7750 offers approximately 44 hours
Strap/Bracelet: Black leather with red contrast stitching, or steel bracelet
Price & Availability: TBD

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The Sinn 936 Chronograph is about as close to a true “tool watch” as they come, with a no-nonsense dial design and greatly enhanced durability. The splashes of red from the chronograph hands play nicely with the contrast stitching on the strap, giving this watch a sporty feel. The date aperture is well placed so as not to interfere with dial balance, and the “Sinn” branding at 12 o’clock is nicely mirrored with the “AUTOMATIK” text at 6. The large sword-shaped hands stand out well against the black dial, and generous amounts of lume have been applied to ensure night-time legibility. While there are strong elements of an aviator watch in the Sinn 936, it falls short of really occupying that space; the characteristic triangle motif at 12 is missing, the crown isn’t particularly large or elongated like other Sinn pilot watches, and there’s no tachymeter scale or slide rule bezel on offer.


The Sinn 936 Chronograph is the sort of sports watch that would look totally out of place with a suit. This certainly isn’t your “dressy diver” or “vintage aviator” that is becoming so prevalent in professional workplaces; this is a tool watch that is begging to be worn actively, with a degree of nonchalance about what the watch might have to endure to keep up with its wearer. Price hasn’t been shared just yet but we’ll update you as soon as we confirm with the brand.

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