Dekla Turbulenz 40 OS

SKU: DK-010

Automatic winding tool watch with hardened steel case - 40 mm
• Watch diameter (mm): 40.0
• Watch height (mm): 11.7
• Lug width (mm): 20
• Lug to lug (mm): 47.8
• Weight - head only (grams): 66
• Water resistance: 200 meters
• Case back: Solid
• Case finish: Matte
• Case metal: Hardened 6Steel
• Dial color: Black
• Front crystal: Sapphire
• Movement: Automatic mechanical
• Manufacturer's limited warranty: 2 years
• Strap or bracelet: Strap
• Warranty service: RGM or Dekla

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WatchBuys Direct Price: $930.00
Availability:  In Stock - Ships Immediately


This watch ships free to US, Canada, Puerto Rico, Guam and APO/FPO/DPO locations from NC with select shipping methods

Dekla Turbulenz 40 OS
Dekla Turbulenz 40 OS

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Product Details

Built for Adventure

The Dekla Turbulenz 40 OS (orange seconds) may look like a pilot's watch, but it is built for adventures beyond the cockpit.

The Turbulenz series from Dekla is a line of tool watches focused on durability and legibility.  The dial takes inspiration from vintage cockpit clocks and pilot's watches which focused on large, legible numerals and high contrast.  The case is made from 6Steel, a material 6 times harder than standard stainless steel.

Dekla is a German watch manufacture based in Stuttgart.  They specialize in the the building of watch cases, certain movement parts, watch dials, and the production of hands - all in-house.  Their engineering capabilities and hands-on approach allow them to produce watches with a remarkable attention to detail.  



Durability and Legibility

6Steel is a proprietary case hardening process developed for Dekla. During the process, the 316L stainless steel case is heated in a mixture of carbon gases at low temperature to allow for the diffusion of atoms.

This intricate process is repeated over many hours and results in a watch case with a hardness rating of 1300 Hv, or 6 times the original hardness of normal stainless steel. 

The hardened watch case is then put through a vacuum chamber to increase corrosion resistance to sea water and sweat. This multi layering process makes 6Steel an ideal case material for sport and diving watches.

Just like the hardened case, the dial and hands are made in-house by Dekla. 

The overall design is inspired by vintage cockpit clocks that served as true navigational tools in the air.  The anchor numerals on the quarter hours along with the triangular marker at 12 allow for a quick read of the time, and the bold indices and hands contrast well against the black lacquered dial. 

The numerals, hour and minute hands, and markers have BGW9 SuperLuminova applied for a strong glow in low light environments.  This watch also features a sporty orange seconds hand which stands out, even from a distance. 




Important features of this watch include:

  • 6Steel case hardened to 1300Hv
  • Sapphire crystal with interior AR coating
  • Black lacquered dial
  • Screw down crown
  • White SuperLuminova BGW9 on hour and minute hands, markers (glows green)
  • SW200-1 automatic winding movement
  • Water resistant to 200 meters

This watch is fitted with a black leather Dekla strap with black stitching.



WatchBuys is the official and authorized North American distributor and importer for Dekla German watches.

When you purchase your new Dekla watch from WatchBuys, you'll receive a brand new German engineered watch with outstanding value.


Made in Germany
Dekla German watches are an "insiders brand", known by those in the watch industry for manufacturing outstanding cases at their production facilities in Ulm, Germany, as well as dials and hands in Stuttgart, Germany.

Until now, the company has largely been known as a manufacturer of watch components for other (primarily German) watch companies, but now is concentrating on their in-house Dekla brand.

Welcome to Dekla German Watches.



In House



Dekla has an interesting background, and quality (or lack thereof) really put things in motion.

The company founders have been involved in watch manufacturing for many years, but when they first started to create and design their watches they purchased cases from a case manufacturer.

Things did not go well - when those cases arrived, the quality did not meet expectations and the company rejected all pieces.  And from that point forward their mission changed.

First, Dekla switched to in-house case production to meet their quality standards.  Next, dial and hand production moved in-house, and so continued a long path towards "German products made by us".



Watch Cases and Parts

We applaud both the attitude and initiative to take over in-house production, and over the years Dekla has continued to expand their manufacturing expertise.

Today Dekla operates a comprehensive machine tool fleet, including three milling machines used for:
  • Rough shaping
  • Manufacture of watch cases
  • Production of small watch parts
Dekla also operates a wire EDM (electro-erosion discharge machine), which is critical to the production of small watch parts.  Lathes and engraving machines complete the production process.

Finally, the company has developed hardened watch cases called 6Steel which use the Kolsterising® process to harden their 316L stainless steel to 1,300 Vickers, more than six times the hardness of a standard watch case.

These hardened 6Steel cases offer superior resistance to scratches, abrasions and nicks.

6Steel Hardened Steel













Watch Dials

Watch dial manufacturing in Germany can be considered a real art, as the process requires a meticulous attention to detail.  For this reason, few German watch companies manufacture their own dials but instead purchase those dials from others.

To make a great watch dial, you must first master the art of pad printing.  The principle of pad printing was invented in Switzerland and involves the application of an image using an elastic pad or roller, and this technology is used by all leading German watch manufacturers.

Dekla manufactures watch dials using pad printing with precision equipment designed for use in the watch industry.  Because this production is not outsourced, all watch dials meet the rigid requirements set by Dekla.



Watch Hands


Watch hands are another component of mechanical watches that are typically outsourced to other companies.

And unfortunately, many times the path of least expense is chosen - purchasing "stained" watch hands which are cheap to manufacture, do not hold up well over time, and are produced in mass quantities overseas.

Dekla has chosen a different approach that is consistent with their other in-house production methods - don't outsource the hands.

The company operates the necessary machinery to produce the punching dies to produce custom watch hands.  The manufacture of watch hands in Germany is a special process that involves a creative approach and the use of the highest quality raw materials.

Renowned German watch hand manufacturers, including Dekla, use the technology of thermal bluing during production.  In addition to the thermal bluing of watch hands, Dekla can produce watch hands from precious metals.

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