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Round stainless steel case with black dial, leather strap, automatic movement, 100m water resistant

Seiko

Seiko 5 Sports SSK025K1 Black Dial Automatic 100M Men's Watch

SKU CH-F5NQ-7PC0D

Stainless steel automatic watch with 24-jewel 4R34 calibre, curved Hardlex crystal, leather strap and 100 m water resistance

  • Watch movementAutomatic
  • Product shapeRound
  • Watch face colorBlack
  • Dial markingsIndex With Numbers At 1, 2, 4, 5, 6, 7, 8, 9, 10, 11 & 12 O'
  • Display typeAnalog
  • Date displayDate
  • Automatic Caliber 4R34 movement powers the watch without a battery
  • 24 jewels reduce friction for smooth long-term operation
  • 100 metre water resistance suits swimming and snorkelling
  • Stainless steel case with curved Hardlex crystal protects the dial
  • Leather strap and buckle clasp give a secure comfortable fit

Seiko 5 Sports Automatic Field Watch

The Seiko 5 Sports SSK025K1 is a men's sports watch built for daily wear and outdoor activity. Its stainless steel case houses the automatic Caliber 4R34 movement with 24 jewels, removing the need for battery changes. A black dial features index markers with numerals at every hour position for clear, quick reading. Water resistance is rated to 100 metres, suitable for swimming and snorkelling.

Upgrade from Quartz or Entry Mechanical

Moving from a battery-powered quartz watch eliminates regular cell replacements and adds the mechanical character of a self-winding movement. The 4R34 calibre provides a date complication and 24-jewel construction for smoother gear-train operation than basic calibres. The jump is worthwhile when you want a reliable tool watch with a leather strap that develops patina over time, rather than a disposable fashion piece.

Suits Daily Wearers Wanting Mechanical Simplicity

This model fits buyers who prefer a single-crown, no-date-adjustment-hassle automatic with 100-metre water resistance and a comfortable leather strap. The fixed bezel and curved Hardlex crystal keep the profile clean for office or weekend use. Buyers needing a GMT hand, screw-down crown, bracelet option, or higher water rating for serious diving should look at other configurations.

How it compares

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

Price $276.99
Pricier than about 82% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameSeiko
Design styleSports
Watch face colorBlack
Item conditionNew
Display
Display typeAnalog
Size & build
Main materialStainless Steel
Product shapeRound
Strap materialLeather
Closure typeBuckle Clasp
Bezel typeFixed Bezel
Case constructionPull Out Crown
Housing materialStainless Steel
Case size39.4 mm
Watch glassCurved Hardlex Crystal
Environment & compliance
Water resistance100m
More details
Watch movementAutomatic
Dial markingsIndex With Numbers At 1, 2, 4, 5, 6, 7, 8, 9, 10, 11 & 12 O'Clock
Date displayDate
Suitable forMale

Questions about this item

What case diameter and lug width does the SSK025K1 have so I can choose a compatible leather strap?

The stainless-steel case measures 39.40 mm across; the supplied leather strap uses a buckle clasp, so match the lug width when selecting a replacement.

How do I set the time and date on the 4R34 automatic movement without damaging the crown?

Unscrew the pull-out crown to the first position for date correction and the second for time setting; push and screw it back down fully to restore 100 m water resistance.

When will the Curved Hardlex crystal or automatic movement need professional service?

Hardlex resists daily scratches but should be inspected if cracked; the 4R34 caliber with 24 jewels typically requires a full overhaul every three to five years.

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