Kensington Watches
Seiko Speedtimer ‘Maximum Precision’ 8R Mechanical Chronograph 42mm Mens Watch

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Seiko

Seiko Speedtimer ‘Maximum Precision’ 8R Mechanical Chronograph 42mm Mens Watch

Ref. 182800000016

Among our 151 Seiko watchesThis watch£2,400
Premium

Sits in Seiko’s upper tier here — more premium than three quarters of the Seiko watches we list, which start at £126.

Price range £126 to £3,550 across 151 Seiko watches in stock.

The original Speedtimer, launched in 1969, was the first automatic chronograph to combine a column wheel with a vertical clutch — the two mechanisms that have since become the standard by which serious chronograph movements are judged. The 8R48 carries that same architecture forward: the vertical clutch eliminates the hand-judder that plagues lesser chronographs at the moment the pusher is pressed, the column wheel governs each start, stop and reset with mechanical precision, and a three-pointed hammer returns all hands to zero simultaneously rather than in sequence. These are not marketing distinctions; they are the difference between a chronograph that reads cleanly and one that introduces its own error. On the wrist the black dial works in favour of legibility rather than drama — the sub-dials are finished differently from the main dial surface, so the eye separates them without effort, which matters when the watch is actually running. The tachymeter on the bezel is there to be used, and the hard coating means it will still be readable after the kind of use that justifies having one.

Reference
182800000016
Brand
Seiko
Collection
Speedtimer
Case size
42mm
Case shape
Round
Dial
Black
Crystal
Sapphire
Bezel
Fixed tachymeter
Movement
Automatic
Calibre
8R48
Functions
Chronograph, Tachymeter
Retailer
Mappin & Webb
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 3 collections

This watch appears in the Seiko Speedtimer range (16), Automatic Watches (1,573) and Chronograph Watches (914).

Seiko Speedtimer ‘Maximum Precision’ 8R alternatives

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

Speedtimer ‘Maximum Precision’ 8R Mechanical Chronograph 42mm Mens Watch compared with 2 alternatives from other brands
SpecificationThis watchSpeedtimer ‘Maximum Precision’ 8R Mechanical Chronograph 42mm Mens Watch182800000016LonginesLegend Diver 42mm Mens WatchL37744902Louis ErardLe Régulateur x Seconde/Seconde/ Limited Edition 42mm Unisex Watch Silver85237AA61.BVA31
Price£2,400£2,350£2,500
Case size42mm42mm42mm
Water resistance—300m50m
MovementAutomaticAutomaticAutomatic
Strap—Leather strapLeather strap
Power reserve—72 hours—
This watchClosely matchedClosely matched

Your new watch

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

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

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

Listed as men's.

Cheapest place to buy

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

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