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Seiko

Seiko 5 Automatic SNKN09J 43.00 mm 50 m 21 Jewels Caliber 7S26 Watch

SKU CH-1GK5-14TYV

A 43.00 mm stainless-steel automatic watch with 21 jewels, day-date display and 50 m water resistance

  • Watch movementAutomatic
  • Product shapeRound
  • Watch face colorSilver and White
  • Dial markingsIndex
  • Display typeAnalog
  • Date displayDate
  • Automatic movement runs without a battery
  • 21 jewels reduce friction for smoother operation
  • 50 m water resistance handles daily splashes
  • 00 mm stainless steel case fits the wrist comfortably
  • Mineral crystal protects the dial from scratches

Japan-made automatic dress watch

The Seiko 5 SNKN09J is a new stainless-steel timepiece built around the 7S26 automatic calibre with 21 jewels. It carries a 43.00 mm case, silver and white dial with index markers, day and date windows, and a mineral crystal. A deployment clasp secures the matching bracelet for daily wear.

Thermals noise and power draw

As a purely mechanical watch it draws no electrical power and produces no audible fan or coil noise. The movement runs from wrist motion alone, so there is no battery to replace and no charging routine. Normal office or outdoor activity keeps the mainspring wound without extra effort.

Sustained load behaviour

Continuous wear maintains the power reserve through the rotor's bidirectional winding. If left unworn the watch will stop once the stored energy is exhausted, requiring a manual wind and time reset via the pull/push crown. Water resistance is rated to 50 m for splashes and brief immersion only.

How it compares

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

Price $159.99
Pricier than about 59% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameSeiko
Design styleDress
Watch face colorSilver and White
Item conditionNew
Display
Display typeAnalog
Size & build
Main materialStainless Steel
Product shapeRound
Strap materialStainless Steel
Closure typeDeployment Clasp
Bezel typeFixed Bezel
Case constructionPull/Push Crown
Housing materialStainless Steel
Case size43 mm
Watch glassMineral Crystal
Environment & compliance
Water resistance50m
More details
Watch movementAutomatic
Dial markingsIndex
Date displayDate
Suitable forMale

Questions about this item

How do I set the day and date on the 7S26 movement without damaging the mechanism?

Pull the crown to the second click, advance the hands past midnight until the day and date change together, then set the correct time; avoid changing the date between 9 PM and 2 AM when the gear train is engaged.

What regular service does the automatic 21‑jewel caliber require?

A full movement clean, lubrication and seal check every three to five years keeps the 7S26 running accurately and maintains the 50 m water resistance.

Where does the 50 m water‑resistance limit show up first during daily wear?

The 50 m rating covers splashes and brief immersion only; sustained pressure from swimming or showering will breach the seals before the case or crystal fails.

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