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Seiko 5 Sports SKX Redux 'Diachi Orange' 42.5mm Mens Watch OrangeSave £20

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Seiko

Seiko 5 Sports SKX Redux 'Diachi Orange' 42.5mm Mens Watch Orange

Ref. SRPL89K1

Among our 192 Seiko watchesThis watch£340
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Stepping up in Seiko's range

Price range £110 to £3,550 across 192 Seiko watches in stock.

A reimagining of the 1990s SKX399, this 42.5mm stainless steel case wears with a lug-to-lug of 46mm and a thickness of 13.9mm. The polished and brushed finishing contrasts neatly, while a screw-down exhibition case back reveals the 4R36 movement beneath a curved Hardlex crystal up front. The Daichi Orange dial carries textured indices and hands loaded with LumiBrite, with a day-date window at three o'clock. A unidirectional rotating bezel with glossy insert and updated knurling completes the look, paired with a black silicone strap on a 22mm lug width.

Reference
SRPL89K1
Brand
Seiko
Case size
42.5mm
Case thickness
13.9mm
Lug width
22mm
Case material
Stainless steel
Case shape
Round
Dial
Orange
Crystal
Hardlex
Bezel
Unidirectional rotating
Movement
Automatic
Calibre
4R36
Functions
Day-date
Water resistance
100m
Bracelet / strap
Silicone strap
Strap colour
Black
Clasp
Buckle
Lume
LumiBrite
Retailer
F.Hinds
Additional specifications
Lug-to-lug
46mm
Power reserve
41 hours
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 4 collections

This watch appears in Stainless Steel Watches (3,157), Automatic Watches (1,753), Watch Price Drops (334) and Automatic Watches Under £500 (333).

Manufacturer’s guarantee

Best of 2 retailers

What the specifications mean

A mechanical watch for everyday wear.

Strengths

  • 100m water resistance covers swimming and watersports
  • 46mm lug-to-lug keeps the 42.5mm case wearable
  • Luminous hands and markers for low light
  • Sits in the lower half of Seiko's range as we list it
Best forSwimming

Price history

This watch is currently at its lowest recorded price. It reached £360 on 3 September. Prices are checked every day, and we record any changes.

£360£34010 August

Seiko 5 Sports SKX Redux alternatives

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

5 Sports SKX Redux 'Diachi Orange' 42.5mm Mens Watch Orange compared with 2 alternatives from other brands
SpecificationThis watch5 Sports SKX Redux 'Diachi Orange' 42.5mm Mens Watch OrangeSRPL89K1MaseratiR8823124002 Sorpasso Automatic Bracelet Watch - W81275R8823124002CitizenMechanical Sports Green Dial Rubber Strap Automatic Men's Watch NJ0129-10XNJ0129-10X
Price£340£339£319
Case size42.5mm42mm43mm
Water resistance100m100m100m
MovementAutomaticAutomaticAutomatic
StrapSilicone strapStainless steel braceletRubber strap
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.

What size strap does it take?

22mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.

Will it fit my wrist?

Lug-to-lug is 46mm, which suits wrists from roughly 16cm (6¼ inches) upward.

Lug-to-lug decides fit more than case diameter does.

How to size a watch to your wrist

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

Listed as men's.

Cheapest place to buy

F.Hinds at £340, against £360 at Mappin & Webb. Two UK retailers stock this reference.

Has the price changed recently?

It's currently at its lowest recorded price since we began tracking it. It's ranged between £340 and £360, today it's £340.

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