Seawolf SSN-21B


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SKU: ASSB Category:
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Get to know all the details

Size: 46 x 54 mm (49 x 54 mm incl. crown)
Case material: Stainless Steel
Case thickness: 14 mm
Case color: Black PVD
Dial color: Black
Movement: Miyota Movement
Strap width: 24 mm
Strap material: Solid stainless steel
Strap color: Black
Interchangeable straps: No
Water resistant: 30 ATM

The hands have a luminous layer for better visibility in the dark.
30 ATM. Dive to places you could never reach before.
Turnable bezel to measure time under water.


316L Stainless Steel

Stainless steel is a steel alloy with a minimum of 10.5% chromium content by mass. It has a natural resistance to magnetic interference, stains and corrosion, which is greatly enhanced through PVD coating. Of the 150 available versions of stainless steel, a very specific type, 316L (the ā€œLā€ stands for Low Carbon) was chosen for its receptiveness to extremely tight machining tolerances.

Water Resistance

30 ATM

Capable of withstanding pressure equivalent to depths of 30 atmospheres or 300 meters, the watch is water resistant and suitable for professional diving. Each watch is factory pressure tested and evaluated to insure the highest standards of water resistance.


Physical Vapor Deposition

PVD is an industrial process originally developed by NASA that is used to precisely transfer a vaporized source material in very thin coatings onto a part within a vacuum chamber. The process is most commonly used for a variety of machine elements with strict performance requirements such as surgical tools and drill bits. PVD coatings can be harder and more corrosion-resistant than coatings applied by an electroplating process.


Japanese Miyota

Equipped with a Quartz crystal oscillator that creates a precise frequency for high-precision timekeeping. The chronograph measures to an accuracy of a 1/10th of a second with a sixty-minute maximum duration and an approximate 2-year battery life. Hack seconds and manual winding allow for synchronizing capabilities.

Fitted with a SR626SW battery. Specific tools are required when removing the case back, we recommend your battery be replaced by a watch repair shop.