Seiko 5 Sports 5 Sports Sports Style Stainless Steel / Blue / NATO

Reference SRPD51K2

Seiko 5 Sports Sports Style Stainless Steel / Blue / NATO

About this watch

The Seiko SRPD51K2, also known as the SRPD51, is a stunning blend of classic design and modern technology. Launched in 2019, this watch is a part of Seiko’s renowned 5 Sports collection, which is celebrated for its robustness and versatility. With a striking blue sunburst dial and a reliable automatic movement, the SRPD51K2 is not just a watch; it's a statement piece. The stainless steel case not only enhances durability but also gives it a sleek, polished look. Plus, the Hardlex glass is designed to withstand scratches, making it an excellent choice for daily wear. At the heart of the Seiko SRPD51K2 is the caliber 4R36 automatic movement. This reliable movement boasts a 41-hour power reserve, allowing you to take it off for a weekend without worrying about it stopping. It features a frequency of 21,600 vibrations per hour, ensuring excellent accuracy. The watch displays hours, minutes, seconds, and even the date and day, making it incredibly functional for everyday use. With a water resistance of up to 100 meters, the SRPD51K2 is a solid choice for swimmers and snorkelers. It's built to withstand the elements. The rotating bezel adds an extra layer of utility, especially for diving enthusiasts who need to track elapsed time underwater.

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Key Features

Seiko caliber 4R36 automatic movement
Stainless steel case with Hardlex glass
100m water resistance

Specifications

Brand

Seiko

Family

5 Sports

Model

5 Sports Sports Style Stainless Steel / Blue / NATO

Reference

SRPD51K2

Movement

4r36

Movement Features

Hours, Minutes, Seconds
Date, Day

Case

Stainless Steel 42.5mm

Dial Color

Blue

Crystal

Hardlex

Water Resistance

100

Current Listings

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Seiko - SRPJ87 · $185

This Seiko 5 Sports SRPJ87 features a stainless steel case with a champagne dial and is known as the '36mm Mid-Field' or 'Champagne Flieger'. It has a curved hardlex crystal, 100m water resistance, and a see-through exhibition screw caseback. The watch is powered by the reliable Seiko Caliber 4R36.

Condition: Running good
Case Diameter: 36.4mm
Lug Width: 18mm
Water Resistance: 100m (10 Bar)

Posted at

Feb 4, 2026, 9:52 AM

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Seiko 5 Sports One Piece Limited Edition Luffy European Limited Edition

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This Seiko One Piece Limited Edition watch features a 46mm diameter case and is one of only 1000 produced.

Condition: mint condition
Movement: Automatic
Case material: Steel
Bracelet material: Steel

Posted at

Feb 3, 2026, 12:11 PM

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Seiko 5 Sports One Piece Limited Edition Luffy Seiko ELT

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A limited edition Seiko watch, part of the One Piece series, featuring a 39mm diameter case and quartz movement.

Case Diameter: 39mm
Movement: Quartz

Posted at

Feb 3, 2026, 5:43 AM

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1966 Seiko 5 Sportsmatic Deluxe

Seiko - 5 Sportsmatic Deluxe · $225

Up for sale is my vintage Seiko 5 Sportsmatic Deluxe on an Uncle Seiko beads of rice bracelet with a 38mm case size.

Condition: Very good condition for its age
Case Size: 38mm diameter
Wrist Size: 6.75 inches

Posted at

Feb 2, 2026, 10:16 AM

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Seiko 5 Sports 7019 6040 on (original?) bracelet XGA 151 with signed clasp and one spare link - free ship to USA

A great-looking vintage Seiko 5 Sports Automatic with a numeric index inner bezel and quickset functions for day and date.

Posted at

Feb 1, 2026, 2:18 PM

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Seiko 5 Sports 6119 8140 'Water 70 Proof' on (original?) bracelet XGA 062 with signed clasp, extender, and two spare links - free ship to USA

Seiko - 6119 8140 · $335

This vintage Seiko 5 Sports Automatic features a 'Water Proof' dial and caseback. The watch runs well and has a good crystal and bracelet.

Condition: good
Bracelet size: 19mm lug width
Case condition: light swirls on top of case; small nicks/dings around/on case and bezel
Dial code: 6119 8150R

Posted at

Feb 1, 2026, 2:14 PM

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Seiko 5 Sports 7S36-01E0 | Automatic | 200m | Made in Japan

Seiko - 7S36-01E0 · $250

This Seiko 5 Sports is an automatic watch made in Japan, featuring a stainless steel case and a black dial. It has a water resistance of 200m.

Condition: Running well with honest wear consistent with use
Movement Type: Seiko 7S36 automatic (23 jewels, day/date)
Case Material: Stainless steel
Water Resistance Depth: 200m

Posted at

Jan 31, 2026, 1:51 AM

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Seiko X Kosuke Kawamura 5 sports SBSA177

Seiko - SBSA177 · $850

This limited edition Seiko Men's 5 Sports Kosuke Kawamura watch is a unique piece with only 3,000 produced. It features an automatic movement and comes with additional details such as a LumiBrite on hands, index(es) and bezel, and a three-fold clasp with push button release.

Condition: Mint condition
Movement Caliber: 4R36
Power Reserve: 41 hours
Water Resistance Bar: 10

Posted at

Mar 8, 2025, 6:34 PM

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1970s Seiko 5 Sports Speedtimer Chronograph Ref: 6138-0030 " Kakume"

Seiko - 6138-0030 · $950

This is a 1970s Seiko 5 Sports Speedtimer Chronograph with a 42mm stainless steel case, original blue tachymeter bezel, and excellent original blue chronograph dial. It comes with the Seiko calibre 6138 and a navy blue leather strap.

Condition: Very nice (42mm Stainless Steel case has some wear from use)
Case size: 42mm diameter
Bracelet type: Navy Blue leather strap
Serial number: 3D1,XXX

Posted at

Jan 23, 2025, 10:12 PM

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