Kensington Watches
Seiko 5 Sports SRPC61J1 Men's Watch – 45mm Black Dial Stainless Steel

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Seiko

Seiko 5 Sports SRPC61J1 Men's Watch – 45mm Black Dial Stainless Steel

Ref. SRPC61J1

Among our 186 Seiko watchesThis watch£339
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Stepping up in the same colour and case shape

Price range £110 to £3,550 across 186 Seiko watches in stock.

At 45mm across and 13mm thick, this is a substantial round case in stainless steel, worn on a matching bracelet secured by a fold-over clasp. The black dial carries hour, minute, and seconds hands alongside day and date displays, with luminous treatment on the hands and markers. A unidirectional rotating bezel surrounds the Hardlex crystal, and the caseback is exhibition-style, leaving the 4R36 automatic movement visible. Lug width is 20mm, and the whole watch weighs 166g. Water resistance is rated to 100 metres.

Reference
SRPC61J1
Brand
Seiko
Case size
45mm
Case material
Stainless steel
Case shape
Round
Dial
Black
Crystal
Hardlex
Bezel
Unidirectional rotating
Movement
Automatic
Calibre
4R36
Functions
Date
Water resistance
100m
Bracelet / strap
Stainless steel bracelet
Strap colour
Silver
Clasp
Folding clasp
Lume
Luminous
Retailer
Watch Enclave
Additional specifications
Power reserve
41 hours
Origin
Made in Japan
Learn more about Seiko

Kintaro Hattori opened a watch and clock shop in Tokyo in 1881, aged twenty-one, and began manufacturing under the name Seikosha — roughly, house of exquisite workmanship — in 1892. The Seiko name appeared on watches from 1924.

The company's significance is that it broke the Swiss monopoly twice. First on precision: Seiko was appointed official timekeeper of the 1964 Tokyo Olympics and built the quartz chronometers and printing timers to do it, and in the 1960s its movements placed highly at the Neuchâtel and Geneva observatory trials against the best Swiss houses.

Then on technology. On Christmas Day 1969 Seiko released the Astron, the world's first quartz wristwatch, accurate to five seconds a month where mechanical watches managed that per day. The consequences for Switzerland were catastrophic — employment in the Swiss industry fell by roughly two-thirds over the following decade. Seiko deliberately did not enforce its quartz patents, allowing the technology to spread.

The same year it produced the 6139, among the first automatic chronographs, and it has since introduced Kinetic, Spring Drive — a hybrid regulating a mechanical mainspring electronically, giving a perfectly gliding seconds hand — and its own dive and field lines.

Seiko remains fully vertically integrated, making its own hairsprings, quartz crystals, and even the Zaratsu-polished cases, at price points from under a hundred pounds upward.

1881
Kintaro Hattori opens his Tokyo shop.
1924
The first watches carry the Seiko name.
1964
Official timekeeper of the Tokyo Olympics.
1969
The Astron becomes the first quartz wristwatch.
1999
Spring Drive enters production.

All Seiko watches

Also in 5 collections

This watch appears in Back in Stock (3,229), Stainless Steel Watches (3,088), Automatic Watches (1,763), Watches 44mm and Over (798) and Automatic Watches Under £500 (336).

Temporarily out of stock

Watch Enclave is not currently taking orders for this reference. Last listed as available on 14 September 2026. Stock is checked nightly and this page updates when it returns.

Out of stock

What the specifications mean

A mechanical watch for everyday wear.

Strengths

  • 100m water resistance covers swimming and watersports
  • Luminous hands and markers for low light
  • Sits in the lower half of Seiko's range as we list it

Worth knowing

  • 45mm is a large watch with real presence
Best forSwimmingEveryday wear
Less suited toSmall wrists

Seiko 5 Sports SRPC61J1 alternatives

Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.

5 Sports SRPC61J1 Men's Watch – 45mm Black Dial Stainless Steel compared with 2 alternatives from other brands
SpecificationThis watch5 Sports SRPC61J1 Men's Watch – 45mm Black Dial Stainless SteelSRPC61J1MaseratiR8823140011 Sfida Automatic Bracelet Watch - W81274R8823140011Bulova98A178 Maquina Automatic Gold Tone Bracelet Watch - W0935698A178
Price£339£359£359
Case size45mm44mm46mm
Water resistance100m100m100m
MovementAutomaticAutomaticAutomatic
StrapStainless steel braceletStainless steel braceletStainless steel bracelet
Power reserve41 hours42 hours
This watchClosely matchedClosely matched

Your new watch

Frequently asked questions, and things you should know about this watch

Can I swim with it?

Yes. At 100m it is rated for swimming and snorkelling, though not for diving.

Water resistance explained

Will the glass scratch?

It resists most everyday knocks. Hardlex is a hardened mineral glass — tougher than standard mineral, softer than sapphire.

Sapphire, mineral and acrylic compared

Does it need a battery?

No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.

Quartz, automatic and solar compared

How long does it run for when it's not worn?

About 41 hours fully wound — enough to survive a night off the wrist, but not a full weekend.

Is it a men's or women's watch?

Listed as men's.

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