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Stainless steel automatic dive watch, blue dial, rubber strap, 43mm case

Seiko

Seiko SKX009K1 Automatic Dive Watch 43mm Blue Dial

SKU CH-9NP9-Q6K10 MPN SEIKO-SKX009K1

Automatic dive watch with 43mm stainless steel case, 20 ATM water resistance, 7S26B movement, day-date display, luminous hands and markers, unidirectional bezel, Hardlex crystal, rubber strap

  • Watch movementMechanical (Automatic)
  • Product shapeRound
  • Watch face colorBlue
  • Display typeAnalog
  • Date displayDate
  • Chronograph functionNo Chronograph
  • Automatic self-winding movement keeps time without batteries
  • 20 ATM water resistance suits serious diving
  • 43 mm stainless steel case resists corrosion
  • Hardlex crystal protects dial from scratches
  • Rubber strap with buckle fits wrists securely

Automatic Dive Watch with 7S26B Movement

This Seiko SKX009K1 is a mechanical dive watch powered by the 7S26B automatic calibre. It displays the day and date through a blue dial protected by Hardlex crystal. A 43 mm stainless steel case houses the movement behind a solid screw-down case back. The watch comes on a rubber strap with a buckle clasp.

Who This Suits and Who Should Look Elsewhere

Buyers wanting a proven ISO-style diver with strong Lumibrite hands and a uni-directional bezel will value this model. It fits wrists that accept a 43 mm case and 22 mm lug width. Shoppers needing a chronograph function, a sapphire crystal, or a hacking and hand-winding movement should consider other options.

20 ATM Water Resistance Decides Suitability

The 20 ATM rating confirms suitability for recreational scuba diving and serious water sports. A screw-down crown and case back maintain the seal at depth. If your use stays at surface level or you require a higher depth rating for professional saturation diving, this specification is the deciding factor.

How it compares

Measured against everything we stock in Analog & Digital Wristwatches, at today’s prices. Recalculated every night.

Price $539.99
Pricier than about 90% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameSeiko
Model nameSEIKO-SKX009K1
Design styleSports
Product colorMulti-Color
Watch face colorBlue
Item conditionNew
Display
Display typeAnalog
Size & build
Main materialStainless Steel
Product shapeRound
Strap materialRubber
Strap width21
Closure typeBuckle
Case size43
Housing materialStainless Steel
Crown typeScrew-down
Environment & compliance
Water resistance200m
More details
Watch movementMechanical (Automatic)
AdjustabilityYes
Date displayDate
Chronograph functionNo Chronograph
Suitable forMale
Age groupAdult

Questions about this item

How often does the 7S26B movement need servicing and what parts wear out?

The 7S26B automatic movement typically requires servicing every three to five years when lubricants dry and gaskets age.

What stops the 20 ATM water resistance from holding up during daily diving?

The screw-down crown and case-back gaskets are the first seals to degrade; they must be pressure-tested and replaced at each service to keep the 20 ATM rating.

Does the Hardlex crystal or rubber strap generate noticeable heat on the wrist after all-day wear?

Neither the Hardlex crystal nor the rubber strap produces perceptible heat; the mechanical 7S26B movement runs without a battery and stays at body temperature.

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