
MWC "Depthmaster" 100atm / 3,280ft / 1000m Water Resistant Military Divers Watch
31 mm · 48 mm L2L · 1000 m

Lugs stay on wrists from about 6.5 in (lug-to-lug rule of thumb)
Last checked Oct 28, 2026
View on Cooper Watches’s site ↗Description SKU: ELVIA/SB/DIV/AU ELVIA first produced military-specification dive watches in the 1970s for the French Marine Nationale (French Navy). This model retains the character and utilitarian design of those original issued watches while incorporating substantial modern upgrades for durability and reliability in everyday use. Among the improvements over the 1970s models are a scratch-resistant sapphire crystal, a ceramic bezel insert, and significantly increased water resistance. Whereas the original watches were rated to approximately 200m, this version is water-resistant to 300m (1000ft), making it suitable for serious diving and demanding professional environments. ELVIA was an officially authorised supplier to the Marine Nationale alongside other well-known military contractors including Beuchat, Tudor, Rolex, Heuer, Auricoste, Triton and ZRC. The watch measures 40mm excluding the crown (45mm including the crown) and is fitted with a 20mm military nylon webbing strap compatible with NATO-style straps. Specifications Water Resistance: 300m / 1000ft Movement: NH36 / 4R36 Automatic Day-Date Mechanical Movement Jewels: 24 jewels Beat Rate: 21,600 bph Power Reserve: Approx. 41 hours Functions: Hours, minutes, central seconds, day and date Hacking: Yes Hand-Winding: Yes Rotor: Bi-directional automatic winding (Magic Lever system) Crown: Screw-down locking crown Case Diameter: 40mm (45mm including crown) Thickness: 15mm Lug-to-Lug: 49mm Crystal Diameter: 31mm Crystal: Sapphire Bezel: Unidirectional diver’s bezel with ceramic insert Illumination: Super-Luminova Weight: 89.5g Strap: Two 20mm NATO military webbing straps included Guarantee: 24 months
Details and photos come from Cooper Watches’s website, last checked Oct 28, 2026. Specs were read automatically and may contain mistakes.
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31 mm · 48 mm L2L · 1000 m






