
Seiko 5 Sports ‘In the metal’ Midfield Automatic Black Dial Steel Bracelet Watch SRPJ81K1
Original price was: £260.00.£208.00Current price is: £208.00. Save £52.00 (20%)
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Description
Seiko 5 Sports ‘In the Metal’ Midfield Automatic Black Dial Steel Bracelet Watch – SRPJ81K1
The Seiko 5 Sports SRPJ81K1 is a robust and stylish field-inspired automatic watch, designed for durability and versatility. With its black dial, stainless steel bracelet, and Seiko’s reliable automatic movement, this timepiece is an ideal companion for those who appreciate rugged aesthetics and mechanical precision.
Design & Features
Dial & Display
Dial Color: Matte Black – Ensures excellent contrast for legibility.
Hour Markers: Bold Arabic Numerals – Inspired by classic field watches for easy reading.
Hands: Silver-Tone with Lumibrite – Enhances visibility in low-light conditions.
Seconds Hand: Red-Tipped – Adds a sporty and distinctive touch.
Day-Date Display: Located at 3 o’clock – Provides practical everyday functionality.
Crystal: Hardlex Mineral Crystal – Scratch-resistant and durable for long-term use.
Case & Build
Material: Stainless Steel – A brushed finish enhances the rugged look.
Case Diameter: 36mm – A versatile and comfortable size for most wrists.
Case Thickness: 12.5mm – Maintains a sturdy yet wearable profile.
Case Back: Exhibition (See-Through) Case Back – Showcases the Seiko 4R36 automatic movement.
Movement & Performance
Movement: Seiko In-House Caliber 4R36 Automatic Movement – Self-winding with hand-winding capability.
Power Reserve: 41 Hours – Provides extended functionality.
Hacking Seconds: Yes – Allows precise time setting.
Water Resistance: 100 meters (10 ATM) – Suitable for swimming and light water activities.
Bracelet & Comfort
Bracelet Material: Stainless Steel with Brushed Finish – Complements the field-watch aesthetic.
Clasp: Deployment with Push Button Release – Ensures a comfortable and secure fit.
Specifications
Brand: Seiko
Model: SRPJ81K1
Collection: Seiko 5 Sports
Movement: Automatic (Seiko Caliber 4R36)
Power Reserve: 41 Hours
Case Material: Stainless Steel
Case Diameter: 36mm
Case Thickness: 12.5mm
Dial Color: Black
Hour Markers: Arabic Numerals with Lume
Hands: Silver-Tone with Lumibrite
Crystal: Hardlex Mineral Crystal
Day-Date Function: Yes, at 3 o’clock
Strap: Stainless Steel Bracelet with Brushed Finish
Clasp: Deployment with Push Button Release
Water Resistance: 100 meters (10 ATM)
Case Back: Exhibition (See-Through)
Key Features
- Field-Inspired Design – Military-style dial with bold numerals for enhanced readability.
- Seiko 4R36 Automatic Movement with 41-Hour Power Reserve – Reliable and precise.
- Day-Date Display at 3 o’clock – Adds everyday convenience.
- Exhibition Case Back – Showcases the automatic movement in action.
- Hardlex Crystal – Scratch-resistant and built to last.
- Perfect 36mm Case Size – Comfortable and versatile for any wrist size.
- 100m Water Resistance – Suitable for everyday adventures and water activities.
The Seiko 5 Sports SRPJ81K1 is a rugged, versatile, and stylish field watch, blending classic military aesthetics with modern functionality. With its automatic movement, durable stainless steel case, and 100m water resistance, this timepiece is built for those who need reliability and style in one package.
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Additional information
Brand | Seiko |
---|---|
Face Colour | Black |
Department | Mens |
Manufacturer | Seiko |
EAN | 4954628249111 |
Strap Colour | Silver |
RRP | 260 |
Guarantee | 2 year manufacturer's warranty |
Family | 5 Sports |
Gender | Mens |
Case Size | 36mm |
Strap Type | Stainless Steel |
Water Resistency | 100m |
Movement | Automatic (Self-Wind & Manual-Wind) |
Glass | Hardlex |
Clasp Type | Push Button Deployant Clasp |
Case Material | Stainless Steel |
Case Finish | Brushed |
Caseback Style | Display / Exhibition Case Back |
Caseback Fastening | Screw-Down |
Crown Type | Push-Down Crown |
Crown Finish | Smooth |
Dial Style | Plain |
Display Type | Analogue |
Day Display | Day / Date – English & French |
Cyclops Lens | Not Applicable |
Markers | Applied |
Luminous Material | Lumibrite |
Luminous Locations | Hands, Markers |
Power Reserve/Battery Life | 41HRS |
gtin | 4954628249111 |
Bracelet Type | Engineer Bracelet |
Maximum Bracelet/Strap Length | 22cm |
Case Height | 12.5mm |
age | adult |
Strap Material | Stainless Steel |
Woocategory1 | Watches |
Woocategory2 | Mens Watches |
Woocategory3 | Seiko Watches |
Woocategory4 | Seiko 5 Sports |
Woocategory5 | Field |
Woocategory6 | Seiko 5 Watches |
Free Strap Adjustment
It's important that your watch fits your wrist comfortably and looks great at the same time.
Leather strap watches tend to fit without a problem for most wearers. However, watches fitted with metal bracelets often need adjusting to get the perfect fit.
This is generally a very simple procedure. We can do this for you, or you can get the watch adjusted locally.
Option 1. Specify your wrist measurement and we will adjust it before being sent
When purchasing a watch which has a metal bracelet with adjustable links, we will gladly adjust the watch bracelet to fit your wrist before sending the watch to you - free of charge!
Simply type your wrist measurement (in inches or centimetres) into the bracelet size section of the checkout and we will ensure the watch bracelet is adjusted accordingly before being sent to you. We will include all the surplus links, with the watch.
How to measure your wrist
You can measure your wrist with a piece of string which you can measure against a ruler:

You should allow about half a centimetre (1/4 inch) of slack to prevent it being too tight on your wrist.
In the event of you needing an extra-long wrist bracelet, which requires an extension to the original watch, we must obtain extra links from the manufacturer, and in this event, we will contact you to inform you of any possible delays or applicable charges.
Watches with bracelets adjusted by WatchNation are still eligible under our refund policy.
Option 2. Buy the watch online from WatchNation and have it adjusted locally
If you wish, you can have it adjusted locally by another jeweller or key cutter. However, you will have to cover the cost of this option yourself.
Delivery Information
Selling Price | Royal Mail 48 (Tracked) | Royal Mail 24 (Tracked & Signed) | Special Delivery Next Day (Orders Placed Mon – Fri) | Special Sunday Delivery (Orders Placed Before Saturday 12pm) | Royal Mail Special Delivery by 1pm |
---|---|---|---|---|---|
£0 to £99.99 | FREE | £4.99 | £7.99 | £7.99 | £9.99 |
£100 to £499.99 | N/A | FREE | £7.99 | £7.99 | £9.99 |
£500 or more | N/A | N/A | FREE | £7.99 | £9.99 |
We know your order is important to you, so we use Royal Mail’s tracked delivery service on all UK orders.
We also offer Royal Mail Special Delivery service, which for an additional fee offers guaranteed delivery the next day before 1pm.
*Royal Mail Tracked 24 and Royal Mail Tracked 48 services are 98% accurate but not guaranteed.
Orders placed before 5pm (Monday-Friday) are dispatched the same day. Orders placed on Saturday or on Sunday are dispatched on the following Monday.
We are pleased to offer worldwide shipping. For accurate shipping rates, please add the item to your basket. Once you enter your shipping address, you will be offered all shipping options.
For the EU, EEA and the rest of the world, the total price you see in the checkout is only for the outbound Royal Mail / DHL Shipping cost. You will be contacted by Royal Mail / DHL regarding duties and taxies to be paid. Should you refuse the parcel and not pay the customs & duties charges dictated by DHL, there will be a refund deduction of the outbound shipping cost of your order, deducted from the order total.
On average, delivery to the EU will take between 3-5 working days and delivery to the rest of the world will take 5-7 working days.
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(18+, T&Cs apply, Credit subject to status)

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