Seiko Prospex Speedtimer New Release
New Release

Seiko Prospex Speedtimer New Release

By cazalea · Nov 21, 2023 · 9 replies
cazalea
WPS member · Seiko forum
9 replies2816 views2 photos
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Cazalea introduces a new series of six Seiko Prospex Speedtimer watches, drawing inspiration from Seiko's rich sports timing heritage. This article details the limited edition automatic chronograph with the Caliber 8R48 and four solar chronographs, celebrating the legacy of the 1969 Speedtimer.

In the 1960's, Seiko announced itself on the international sports timing stage with a whole new generation of high-precision equipment that was enthusiastically endorsed by many international sports federations and used to capture elapsed time at many of the world's leading sports events. Central to this success was a range of stopwatches that incorporated Seiko's innovative "heart-shaped cam" mechanism, a feature which delivered a level of precision once thought unachievable by manual sports timing devices. Then, in 1969, Seiko introduced the Seiko Speedtimer with the innovative Caliber 6139. It was the world's first automatic chronograph with a column wheel and vertical clutch, two devices that delivered real improvements in the measurement of elapsed time in a wristwatch and are still a prerequisite in high functionality chronographs.

Today, A new series of six watches inspired by the Speedtimer and Seiko's rich and continuing tradition of sports timing join the Prospex collection. 

A limited edition watch with a new automatic chronograph movement pays faithful tribute to the design of the 1964 stopwatch, while a second version with the same caliber inside AND 
A series of four solar chronographs complete the range.




A new Speedtimer arrives soon, as a limited production 100th Anniversary model, equipped with both multi-link bracelet and strap.
Movement
Caliber Number 8R48
Movement Type Automatic with manual winding
Precision +25 to -15 seconds per day
Power reserve Approx. 45 hours
Jewels 34

Functions
Chronograph with 30 minutes & 12 hours
Stop second hand function
Date display

Construction
Case/Band Material Stainless steel (super hard coating)
Thickness:14.6mm
Diameter:42.0mm
Lug-to-lug:49.5mm
Three-fold clasp with push button release
Distance between lugs 20mm

Crystal
Dual-curved sapphire crystal
Crystal Coating
Anti-reflective coating on inner surface

Dial
LumiBrite
Lumibrite on hands and index(es)


Other Details
Water Resistance 10 bar
Magnetic Resistance 4,800 A/m
Weight 183.0g

Features
LIMITED EDITION on the case back
Serial number engraved on the case back
An additional calf strap

 Special SEIKO page



I thought I knew about the Speedtimer line from Seiko, having had a few. Apparently I have been under-informed! Take a look at this line-up (or fall over amazed and dismayed).









About the Seiko Seiko Chronograph Ref. 6139

The Seiko 6139 is an automatic chronograph movement introduced in the late 1960s, notable for its integrated column wheel and vertical clutch. The 6139-600X series, particularly those with yellow or blue dials, gained the "Pogue" moniker due to its association with Colonel William Pogue. These watches were produced by Seiko's Suwa factory, featuring specific dial markings that distinguish variations within the series.

Specifications

Caliber
6139
Case
Stainless Steel
Diameter
41mm
Dial
Yellow or Blue
Water Resist.
70M
Crystal
Hardlex

Key Points from the Discussion

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The Discussion
SA
SALMANPK
Nov 21, 2023

My Dad has the SS813 Speedtimer S

KU
KURT_DAVID
Nov 22, 2023

It seems like a no brainer to me. Perhaps I’m missing something regarding Seiko planning.

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