Seiko Mod Marine Master Professional – Black Dial Diver | 40mm
$250.00
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Not available
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✓ Estimated Delivery
September 11, 2025
September 11, 2025
Description
The Seiko Mod Marine Master Professional 300m is a high-performance custom diver’s watch, hand-assembled using the NH35 automatic movement and premium-grade components. Featuring a black dial with Luminova markers, sapphire crystal, and a robust 316L stainless steel case, it offers 20 ATM water resistance and a unidirectional aluminum bezel. Precision-tuned to -5s/d to +5s/d, demagnetized, and packaged with a leather case, tools, and a 3-year warranty.
Features
Assembly
Hand-assembled Seiko Mod Marine Master with NH35 automatic movement
Case 40 mm 316L stainless steel, 12.9 mm thick
Dial Black with Luminova hands and indices
Crystal Sapphire with cyclops magnifier and anti-reflective treatment
Water Resistance 20 ATM / 200 m
Bezel Unidirectional aluminum
Bracelet Jubilee with 20 mm lug width
Accuracy Chronometer-adjusted (-5s/d to +5s/d)
Included Leather case, adjustment tools, and 3-year warranty
Technical Data
Diameter
⌀ 40mm (excluding crown)
Thickness
12.9mm
Glass
Sapphire, anti-reflective treatment
Luminova
Yes
Case
316L stainless steel
Crown
Screw-down
Wrist size
⌀14.5cm to ⌀22cm (Adjustable)
Lug spacing
20mm
Bracelet
316L stainless steel
Glass case back
Yes
Water resistance
20 ATM
Bracelet
Bracelet : 316L stainless steel
Lug Width: 20mm
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Specialisations
Sapphire with cyclops magnifier & anti-reflective coating
About the brand
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This product has multiple variants. The options may be chosen on the product page
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This product has multiple variants. The options may be chosen on the product page
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