Seiko 5 Sports SRPK20, 42mm, Blue Dial, Gold Stainless Steel Bracelet
Seiko 5 Sports, Blue Dial
The Seiko 5 Sports SRPK20 is a 42mm unisex automatic sport watch featuring a blue dial, a stainless steel case with gold finish, and 100m water resistance.
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About this item
- Vivid blue dial with luminous hands and markers for clear visibility.
- Automatic self-winding movement powered by your natural wrist motion.
- Durable stainless steel case and bracelet with a luxurious gold finish.
- Water-resistant down to 100 metres, suitable for swimming and snorkelling.
- Equipped with the reliable 4R36 automatic calibre for precise timekeeping.
Top Highlights
- Brand
- Seiko
- Model Name
- SRPK20
- Model Number
- SRPK20
- Department
- Unisex
- Item Type
- Sport Watch
- Manufacturer
- SEIKO
- Country of Origin
- Japan
- First Available
- 12 July 2023
- Release Year
- 2023
Features & Specs
- Display
- Analog
- Movement Type
- Automatic
- Calibre
- 4R36
- Additional Features
- Second Hand
- Battery
- No battery (automatic)
- Strap Type
- Bracelet
- Case Material
- Stainless steel
- Case Size
- 42.0 mm
- Case Thickness
- 13.0 mm
- Lug Width
- 20.0 mm
- Weight
- 226.8 g
- Water Resistance
- 100 m
- Sport Type
- Walking
- Strap
- Stainless Steel with Gold Finish
- Clasp
- Deployment-clasp-with-push-button
- Closure Type
- Buckle
- Embellishment
- Crystal
- Crystal
- Hardlex
- Dimensions
- 12.7 x 9.91 x 8.61 cm; 226.8 g
Style
- Style Name
- Modern
- Dial Shape
- Round
- Dial Colour
- Blue
- Band Color
- Gold
- Theme
- Sports
- Face Style
- sunray finish
- Collection
- 5 Sports
- Dial Markers
- Luminous markers
Will it fit your wrist?
Best on 17.5–18.5 cm (6.9–7.3 in) wrists
A 42 mm case sits just right on these wrists. If your wrist is 18.5–19.5 cm, it looks smaller and more understated. If your wrist is 16.5–17.5 cm, it looks bigger and bolder.
Measure your wrist and see what fitsA rough guide based on case diameter only.
Is this watch big or small?
63% of the watches we list are smaller than this one
The most common size is 40 mm (249 models). 205 models are 42 mm, like this one.
All our watch size dataDescription
The Seiko 5 Sports SRPK20 automatic watch is designed for individuals seeking a versatile and robust timepiece suitable for daily wear and light aquatic activities. This model, part of the renowned 5 Sports collection, combines a classic aesthetic with modern reliability, making it an excellent choice for both casual outings and more active pursuits. Its unisex appeal ensures broad compatibility for various wrist sizes and styles.
At its core, the SRPK20 is powered by the Seiko 4R36 automatic movement, known for its durability and accuracy, offering a 41-hour power reserve. The watch features a 42mm stainless steel case with a luxurious gold finish, complemented by a vibrant blue dial protected by a resilient Hardlex crystal. With a water resistance of 100 metres, it is well-suited for swimming and snorkelling, providing peace of mind during water-related adventures.
The watch is secured with a matching stainless steel bracelet, also with a gold finish, and a reliable deployment clasp with push-button release for comfortable and secure wear. Its luminous hands and markers ensure excellent readability in various lighting conditions, reinforcing its utility as a practical sport watch. The transparent caseback offers a glimpse into the intricate automatic movement, appealing to enthusiasts.
Frequently Asked Questions
Is the Seiko 5 Sports SRPK20 suitable for daily swimming?
Yes, the Seiko 5 Sports SRPK20 offers 100 metres of water resistance, making it suitable for daily swimming, showering, and snorkelling. However, it is not recommended for scuba diving or high-impact water sports.
What is the difference between the 4R36 movement and other automatic calibres?
The Seiko 4R36 automatic movement in the SRPK20 is known for its reliability and includes hacking (stopping the second hand for precise time setting) and manual winding capabilities, features not always found in entry-level automatic movements.
How often should I service my Seiko 5 Sports SRPK20 watch?
Automatic watches like the Seiko 5 Sports SRPK20 generally benefit from a service every 3 to 5 years to ensure optimal performance and longevity. Regular maintenance helps preserve the movement's accuracy.
Is the Hardlex crystal durable enough for active use?
The Hardlex crystal on the Seiko 5 Sports SRPK20 offers good impact resistance and is quite durable for most daily and active use. While not as scratch-resistant as sapphire, it provides a robust and cost-effective solution for a sport watch.
What wrist size is suitable for the 42mm Seiko SRPK20?
The 42mm case size of the Seiko 5 Sports SRPK20 is generally suitable for a wide range of wrist sizes, typically from 6.5 to 8 inches (16.5 to 20 cm) in circumference. Its unisex design ensures comfortable wear for many individuals.
Does the SRPK20 have a date complication?
While the 4R36 movement typically includes a day/date complication, the provided product information for the Seiko 5 Sports SRPK20 does not explicitly list it as a feature. Please refer to detailed product images or the manufacturer's specifications for confirmation.
Editor's take
The Seiko 5 Sports SRPK20 represents a compelling entry into the world of accessible mechanical watches, building upon a legacy of robust and reliable timepieces. As part of the iconic 5 Sports collection, this model caters to enthusiasts and casual wearers alike who appreciate a blend of classic design and modern functionality. Its striking blue dial and gold-finished stainless steel construction offer a versatile aesthetic suitable for various occasions, from daily wear to weekend adventures.
Powering the SRPK20 is the well-regarded Seiko 4R36 automatic movement, a workhorse calibre known for its dependability, hacking seconds, and manual winding capabilities. This movement provides a practical 41-hour power reserve, ensuring consistent performance for daily use. The 42mm stainless steel case is complemented by a durable Hardlex crystal, offering good scratch resistance for its price point, while the 100-metre water resistance makes it suitable for recreational swimming and snorkelling.
One potential consideration for some users might be the Hardlex crystal, which, while robust, does not offer the same scratch resistance as sapphire found in higher-end models. While perfectly adequate for most daily activities, those seeking ultimate durability might prefer a sapphire upgrade. Additionally, the gold finish, while luxurious, may show wear over time with heavy use, a common characteristic of plated materials.
Ultimately, the Seiko 5 Sports SRPK20 is an excellent choice for anyone seeking a stylish and reliable automatic watch with a sporty edge. It’s particularly well-suited for individuals looking for a versatile everyday timepiece that can transition seamlessly between casual and semi-formal settings. For those prioritising a robust mechanical movement and a distinctive aesthetic without breaking the bank, this model offers significant value within its segment.
In categories
From the manufacturer

Automatic Movement Calibre
The Seiko SRPK20 features a robust automatic movement, a hallmark of traditional watchmaking. This self-winding calibre provides reliable timekeeping without the need for a battery. Its mechanical precision is designed for consistent performance.

Durable Case Construction
The SRPK20 is housed in a 42.0mm stainless steel case, offering substantial wrist presence. Its Hardlex crystal provides enhanced scratch resistance and durability. This construction ensures resilience for daily wear.

100m Water Resistance
Rated for 100 metres of water resistance, the SRPK20 is suitable for swimming and snorkelling. This capability underscores its designation as a sport watch. The robust sealing ensures integrity in aquatic environments.

Stainless Steel Bracelet
The SRPK20 is fitted with a stainless steel bracelet, providing a secure and comfortable fit. Its gold finish accents offer a distinct aesthetic contrast. This combination enhances both durability and visual appeal.

Seiko Horological Heritage
The SRPK20 embodies Seiko's commitment to accessible mechanical watchmaking. It combines practical specifications with a classic sport watch aesthetic. This model continues a legacy of reliable and well-engineered timepieces.

Seiko Collections
SRPD71
Warranty & Support
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