This watch, the P656ND/1, is no longer produced by MWC, making it a rare and highly sought-after model. Below is a detailed description of this particular watch, followed by comprehensive information from the factory website, including dimensions, specifications, and other relevant details.
We acquire these watches from various defense auctions and other government disposal sales. The P656ND/1 model is closely based on the original MIL-W-4374F-TYPE 6 from 1995 but boasts a much higher specification. For reference, the original MIL-W-4374F-TYPE 6 can be seen in the final image.
Condition: Appears new, as shown in the images.
FACTORY DESCRIPTION
SKU Code: P656ND/1
The MWC Tactical Series watches, with 300m water resistance, were engineered for marine, surface, and airborne use. These watches are manufactured to exceed U.S. W-46374F Type 6 specifications and were produced under a bulk contract for specific clients. Although based on mid-1990s designs, they have been significantly upgraded to meet modern standards.
Key Upgrades:
Case Material: Solid steel (originally carbon fiber in the 1990s models)
Water Resistance: Increased tenfold, from 30m to 300m (165ft to 1000ft)
Screw-Down Crown: Adds further water resistance
Bezel and Dial: High-visibility numerals and clear readability under low-light conditions
This watch uses Swiss Tritium GTLS (Gaseous Tritium Light Sources), which provide brighter luminescence than traditional luminous materials.
Features:
Movement: High-quality Ronda 715li, with a 10-year battery life
Water Resistance: Rated to 30 ATM (300m / 1000ft), suitable for on-land and water activities. It is built to the same water resistance standard as MWC’s dedicated diver models.
Altitude Accuracy: Designed to maintain high accuracy at altitudes up to 12,000m (40,000ft) without requiring compensatory pressurization.
Tritium Symbol: The dial displays a radioactive tritium symbol. Tritium, a hydrogen isotope, emits beta particles that are safe as they do not penetrate skin, glass, or plastic. Even combined, these vials contain less than the personal safety limit of 25 millicuries, per U.S. Nuclear Regulatory Commission regulations (10 CFR 30.15).
