We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in

Seiko

Seiko 5 SNKP21J1 Automatic Watch 42.00 mm

SKU CH-ZTWG-5ZXXG

Stainless-steel automatic watch with 21-jewel 7S26 movement, black Arabic dial, day-date window and 50 m water resistance

  • StyleCasual
  • MaterialStainless Steel
  • MovementAutomatic
  • ShapeRound
  • Dial ColorBlack
  • Dial MarkersArabic Numeral
  • Automatic movement with 21-jewel 7S26 calibre keeps time without a battery
  • Stainless steel case and bracelet resist daily wear and corrosion
  • Black Arabic dial with day-date window offers clear, at-a-glance readability
  • 50 m water resistance handles splashes and brief immersion
  • 00 mm case diameter suits a wide range of wrist sizes

Seiko 5 Automatic 42 mm Watch

The Seiko 5 SNKP21J1 is a stainless steel automatic watch with a 42.00 mm case and black Arabic dial. It runs on the 7S26 calibre with 21 jewels and shows day and date through a mineral crystal. Water resistance is rated to 50 m and the bracelet secures with a deployment clasp.

Casual Daily Wearer

Suits buyers wanting a straightforward mechanical watch for everyday casual use with a metal bracelet. Not for buyers who need higher water resistance for swimming or diving, or who prefer a slimmer case profile under the cuff.

50 m Water Resistance Headroom

Comfortably handles splashes, rain and brief immersion such as hand washing. Runs out at sustained swimming, snorkelling or any pressure beyond the 50 m rating, so it should not be used for water sports.

Highlights

  • Automatic movement with 21-jewel 7S26 calibre keeps time without a battery
  • Stainless steel case and bracelet resist daily wear and corrosion
  • Black Arabic dial with day-date window offers clear, at-a-glance readability
  • 50 m water resistance handles splashes and brief immersion
  • 00 mm case diameter suits a wide range of wrist sizes

Specifications

BrandSeiko
StyleCasual
MaterialStainless Steel
MovementAutomatic
ShapeRound
Dial ColorBlack
Dial MarkersArabic Numeral
DisplayAnalog
DateDate
Band MaterialStainless Steel
FastenerDeployment Clasp
GenderMale
ConditionNew
BezelFixed Bezel
Case BackPull/Push Crown
Case MaterialStainless Steel
Case Thickness42.00 mm
CrystalMineral Crystal
Water-Resistant50m
Special FeaturesMineral Crystal,Deployment Clasp,Day and Date Display,Pull/Push Crown

Questions about this item

Does the automatic movement need a watch winder if I don't wear it daily?

The 7S26 calibre with 21 jewels winds itself through wrist motion; if left unworn for roughly two days the power reserve will run down and the watch will stop until worn again or manually wound via the crown.

Can the 42.00 mm case and stainless-steel bracelet be sized using standard spring-bar tools?

Yes, the round stainless-steel case uses standard spring bars and the bracelet links have removable pins, so any watchmaker or hobbyist with a spring-bar tool and pin pusher can adjust the fit.

How do I confirm the day-date complication is advancing correctly after setting the time?

Advance the hands past midnight using the pull/push crown; the day and date windows should change simultaneously at that point, confirming the mechanism is engaged.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.