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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Condition: Like new
Water Resistance: 100m
Depth Rating: 100m depth rating
Box And Papers: full set

Posted at

Jan 25, 2026, 10:33 AM

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Condition: good Working condition
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Jewels: 21 Jewels
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Posted at

Jan 24, 2026, 9:31 AM

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Condition: good condition with only light wear on the case and slightly more wear on the bracelet
Case diameter: 39mm
Movement service date: January 2026
Movement accuracy: <30 seconds per day

Posted at

Jan 21, 2026, 7:20 PM

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SEIKO 5 SPORTS AUTOMATIC. $145 Shipped

SEIKO - SNKF17J1 · $145

This is a Seiko 5 Sports automatic watch with in-house movement, stainless steel case, and classic sports aesthetic.

Condition: good Working condition
Case diameter: 39mm
Thickness: 14mm
Lug to lug: 42mm

Posted at

Jan 18, 2026, 4:51 PM

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Vintage Seiko 5 Sportsmatic Deluxe 7619-7010 - $225 Shipped!

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This vintage Seiko 5 Sportsmatic Deluxe features an automatic movement and a stunning sunburst dial with day/date window, housed in a 38mm case.

Condition: great overall condition with light signs of wear
Case size: approximately 38mm
Diameter: approximately 7.2 inches for bracelet

Posted at

Jan 18, 2026, 9:47 AM

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Seiko 5 sports X Pepsi LE SRPL99- $415 shipped!

Seiko - 5 sports X Pepsi LE SRPL99 · $415

A limited edition collaboration between Seiko and Pepsi, coming in a unique packaging that resembles a Pepsi can.

Condition: Mint condition
Limited edition quantity: 7000

Posted at

Jan 17, 2026, 5:24 PM

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Seiko X Kosuke Kawamura 5 sports SBSA177

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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

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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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View listing on RolexForums