Kensington Watches
Seiko 5 Sports SSK036K1 Men's Watch – 42.5mm Black Dial Leather

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Seiko

Seiko 5 Sports SSK036K1 Men's Watch – 42.5mm Black Dial Leather

Ref. SSK036K1

Among our 202 Seiko watchesThis watch£399
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Stepping up in the same colour and case shape

Price range £110 to £3,550 across 202 Seiko watches in stock.

The round case sits at 42.5mm, a size that fills the wrist without overwhelming it. A black dial keeps things purposeful, with the Sports lineage evident in the layout's straightforward legibility. The leather strap gives it a cleaner, dressier character than the bracelet variants in the same family, softening what is otherwise a robustly proportioned watch. Underneath, an automatic movement does the work without any need for a battery. It is a dependable everyday watch that wears its intentions honestly.

Reference
SSK036K1
Brand
Seiko
Case size
42.5mm
Case material
Gold PVD
Case shape
Round
Dial
Black
Crystal
Hardlex
Bezel
Bidirectional rotating
Movement
Automatic
Calibre
4R34
Functions
GMT, Date
Water resistance
100m
Bracelet / strap
Leather strap
Strap colour
Brown
Clasp
Buckle
Lume
LumiBrite
Retailer
Watch Enclave
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 Automatic Watches (1,641), Leather Strap Watches (1,029), Gold Watches (694), Automatic Watches Under £500 (375) and GMT Watches (229).

Temporarily out of stock

Watch Enclave is not currently taking orders for this reference. Last listed as available on 5 August 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
  • Second time zone for travelling

Worth knowing

  • Leather does not suit regular contact with water
Best forSwimmingTravelFormal wear

Seiko 5 Sports SSK036K1 alternatives

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

5 Sports SSK036K1 Men's Watch – 42.5mm Black Dial Leather compared with 2 alternatives from other brands
SpecificationThis watch5 Sports SSK036K1 Men's Watch – 42.5mm Black Dial LeatherSSK036K1MaseratiR8823112006 Traguardo Automatic Bracelet Watch - W81331R8823112006Roamer984985 41 85 20 Searock Master Bracelet Watch - W60270984985 41 85 20
Price£399£399£429
Case size42.5mm42mm42mm
Water resistance100m100m100m
MovementAutomaticAutomaticAutomatic
StrapLeather strapStainless steel braceletStainless steel bracelet
Power reserve——44 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

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

Listed as men's.

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