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Silver stainless steel round watch, 36 mm case, grey dial with day and date, stainless steel bracelet, 18 mm band width

Seiko

Seiko SNK621K1 36 mm Automatic Watch

SKU CH-EB74-M46K8 MPN SNK621K1

A 36 mm stainless steel automatic watch with a grey dial, 21-jewel movement, day and date display, Hardlex crystal and 30 m water resistance

  • StyleDress
  • MaterialStainless Steel
  • MovementMechanical
  • ShapeRound
  • Dial ColorGrey
  • Dial MarkersIndex
  • Automatic 21-jewel movement runs up to 43 hours
  • 36 mm stainless-steel case fits comfortably on the wrist
  • Hardlex crystal protects the grey dial from scratches
  • Day and date windows at 3 and 6 o'clock
  • 30 m water resistance handles splashes and brief immersion

What this watch is and who it fits

The Seiko SNK621K1 is a 36 mm automatic dress watch with a grey dial and stainless-steel bracelet. It runs on the Cal. 7S26 movement with 21 jewels and a 43-hour power reserve. The day and date appear at the 3 and 6 o'clock positions. This piece suits anyone wanting a compact, mechanical daily wearer.

Practical limits of 30 m water resistance

Water resistance is rated at 30 metres or 99 feet. That level protects against splashes and brief immersion only. It is not suitable for swimming, showering or any sustained water pressure. Keep the crown pushed in and avoid operating it while wet.

The single spec that decides fit

Case diameter is 36 mm and thickness is 11 mm. Band width is 18 mm with a deployment clasp. If those dimensions match your wrist and the 30 m rating covers your routine, this is the right watch. Buyers needing greater water resistance or a larger case should look elsewhere.

Highlights

  • Automatic 21-jewel movement runs up to 43 hours
  • 36 mm stainless-steel case fits comfortably on the wrist
  • Hardlex crystal protects the grey dial from scratches
  • Day and date windows at 3 and 6 o'clock
  • 30 m water resistance handles splashes and brief immersion

Specifications

BrandSEIKO
ModelSNK621K1
StyleDress
MaterialStainless Steel
MovementMechanical
ShapeRound
Dial ColorGrey
Dial MarkersIndex
DisplayAnalog
DateDate
Band MaterialStainless Steel
FastenerDeployment Clasp
GenderMale
ConditionNew
BezelFixed Bezel
Case MaterialStainless Steel
Case Thickness38.00 mm
CrystalHardlex Crystal
Water-Resistant30m
Special FeaturesHardlex Crystal,Deployment Clasp,Day and Date Display

Questions about this item

What does the 36 mm case size mean for wrist fit?

The 36 mm diameter and 11 mm thickness suit small to medium wrists and keep the profile low under a shirt cuff.

How does the 43 hour power reserve work in daily wear?

Natural wrist motion keeps the 7S26 movement wound; if the watch is unworn for roughly two days it will stop and need a manual wind.

What does 30 m water resistance allow in practice?

It protects against splashes and brief immersion such as hand washing, but is not rated for swimming or showering.

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