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Blue dial automatic watch with stainless steel case and blue silicone strap

Seiko

Seiko 5 Sports SRPD71K2 Automatic Blue Dial 42mm 100m Silicone Strap

SKU CH-4CCW-B24WR

An automatic sports watch with a 42 mm stainless-steel case, blue dial, 100 m water resistance and a silicone strap

  • StyleSports
  • MaterialStainless Steel
  • MovementAutomatic
  • ShapeRound
  • Dial ColorBlue
  • Dial MarkersDotted Markers
  • Automatic 4R36 caliber with 24 jewels powers the watch without a battery
  • 100 m water resistance suits swimming and surface water sports
  • Blue dial with dotted markers gives clear legibility in varied light
  • Stainless-steel case and Hardlex crystal protect the movement from daily knocks
  • Silicone strap with buckle clasp stays secure and comfortable during active use

A 42 mm Automatic Sports Watch for Daily Wear

The Seiko 5 Sports SRPD71K2 runs on the 4R36 automatic calibre with 24 jewels. A stainless steel case and Hardlex crystal protect the blue dial with dotted markers. It offers 100 m water resistance and a day and date display for everyday utility.

Silicone Strap and Unidirectional Bezel Add

The supplied silicone strap uses a buckle clasp for secure, adjustable fit during activity. The unidirectional bezel allows elapsed-time tracking without accidental rotation. Both elements suit swimming or gym sessions directly from the box.

Verify Wrist Size and Winding Preference Before

The 42.00 mm case diameter and lug-to-lug span determine how the watch sits on smaller wrists. Automatic movement requires regular wrist motion or manual winding to maintain power reserve. Buyers needing a bracelet, sapphire crystal or ISO dive certification should consider other models.

Highlights

  • Automatic 4R36 caliber with 24 jewels powers the watch without a battery
  • 100 m water resistance suits swimming and surface water sports
  • Blue dial with dotted markers gives clear legibility in varied light
  • Stainless-steel case and Hardlex crystal protect the movement from daily knocks
  • Silicone strap with buckle clasp stays secure and comfortable during active use

Specifications

BrandSeiko
StyleSports
MaterialStainless Steel
MovementAutomatic
ShapeRound
Dial ColorBlue
Dial MarkersDotted Markers
DisplayAnalog
DateDate
Band MaterialSilicone
FastenerBuckle Clasp
GenderMale
ConditionNew
BezelUnidirectional Bezel
Case MaterialStainless Steel
Case Thickness42.00 mm
CrystalHardlex Crystal
Water-Resistant100m
Special FeaturesHardlex Crystal,Buckle Clasp,Day and Date Display

Questions about this item

How often does the automatic 4R36 movement need servicing?

The 4R36 automatic movement typically requires servicing every three to five years to maintain accuracy and lubrication.

What limits daily wear comfort during extended use?

The 42.00 mm case thickness and stainless steel construction may feel substantial on smaller wrists after all-day wear.

How much heat does the watch generate when worn continuously?

Mechanical movements produce negligible heat; the watch remains at body temperature during continuous wear.

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