Kensington Watches
Seiko Alpinist Land 39.5mm Mens Watch Blue

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Seiko

Seiko Alpinist Land 39.5mm Mens Watch Blue

Ref. SPB503J1

Among our 166 Seiko watchesThis watch£940
Premium

Sits in Seiko’s upper tier here — more premium than three quarters of the Seiko watches we list, which start at £110.

Price range £110 to £2,900 across 166 Seiko watches in stock.

A 39.5mm stainless steel case with a DiaShield super-hard coating houses a teal blue-green dial arranged with Arabic numerals and wedge-shaped indices, cathedral-style hour and minute hands, and LumiBrite lume throughout. The sapphire crystal carries an anti-reflective inner coating and a date magnifier. Two crowns sit on the right side of the case: one at 3 o'clock, a second at 4 o'clock to operate the internal rotating compass ring. The 6R55 automatic movement offers 72 hours of power reserve and hacking seconds, visible through a screw-down exhibition caseback engraved with a mountain motif. A stainless steel bracelet with a three-fold push-button clasp completes the watch, which is water-resistant to 200 metres.

Reference
SPB503J1
Brand
Seiko
Case size
39.5mm
Case thickness
12.7mm
Lug width
20mm
Case material
Stainless steel
Case shape
Round
Dial
Teal
Crystal
Sapphire
Movement
Automatic
Calibre
6R55
Functions
Date, Compass
Water resistance
200m
Bracelet / strap
Stainless steel bracelet
Strap colour
Silver
Clasp
Three-fold clasp
Lume
LumiBrite
Retailer
Goldsmiths
Additional specifications
Lug-to-lug
46.4mm
Power reserve
72 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 5 collections

This watch appears in Stainless Steel Watches (2,782), Automatic Watches (1,540), Sports Watches (700), Dive Watches (503) and Green Dial Watches (396).

Manufacturer’s guarantee

What the specifications mean

A mechanical watch built to be worn hard and got wet.

Strengths

  • 200m water resistance, rated for actual diving
  • 39.5mm suits most wrists
  • 46.4mm lug-to-lug keeps the 39.5mm case wearable
  • Sapphire crystal, which resists scratching
  • 72-hour reserve survives a weekend off the wrist
Best forDivingSwimmingEveryday wear

Price history

This watch is currently at its highest recorded price. It was £880 on 10 August. Prices are checked every day, and we record any changes.

£940£94010 August

Seiko Alpinist Land alternatives

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

Alpinist Land 39.5mm Mens Watch Blue compared with 2 alternatives from other brands
SpecificationThis watchAlpinist Land 39.5mm Mens Watch BlueSPB503J1Nivada GrenchenAquamar Automatic 38mm Mens Watch Black32068A01CertinaDS Action GMT Powermatic 80 41mm Mens WatchC0329292605100
Price£940£985£1,025
Case size39.5mm38mm41mm
Water resistance200m200m200m
MovementAutomaticAutomaticAutomatic
StrapStainless steel braceletRubber strapLeather strap
Power reserve72 hours38 hours
This watch
  • Wears smaller
  • Wears larger

Your new watch

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

Can I swim with it?

Yes. At 200m it is rated for swimming, snorkelling and recreational diving.

Water resistance explained

Will the glass scratch?

Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.

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 72 hours fully wound — enough to sit off the wrist over a weekend and still be running.

What size strap does it take?

20mm. 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 46.4mm, 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, though at 39.5mm it sits in the range that suits anyone.

Cheapest place to buy

Goldsmiths is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.

Has the price changed recently?

It's currently at its highest recorded price. It's ranged between £880 and £940, today it's £940.

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