Seiko Prospex Landmaster SLA071 & Navigator Timer SPB411
New Release

Seiko Prospex Landmaster SLA071 & Navigator Timer SPB411

By cazalea · Oct 4, 2023 · 5 replies
cazalea
WPS member · Seiko forum
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Cazalea introduces two new Seiko Prospex watches: the Landmaster SLA071 and the Navigator Timer GMT SPB411, commemorating significant milestones. This post highlights the technical specifications and design philosophy behind these adventure-ready timepieces, offering a detailed look at their features and heritage.

And they are beautiful!

The Landmaster SLA071

The Seiko Landmaster series was born in Japan in 1993; over its 30-year history, Landmasters have earned the trust and met the needs of adventurers & mountaineers with repeated improvements & enhancements. 



In commemoration of the 30th anniversary of the series, Seiko presents a new Prospex creation which incorporates the high reliability of generations of Landmasters and the design of the most representative models.



With this new Landmaster, a light and comfortable fit is ensured through a case made of pure titanium, a material with excellent corrosion resistance, while a super hard coating protects from scratches. The compass ring and rotating bezel, hallmarks of the Landmaster series, have been given a three-dimensional shape for ease of operation and legibility. Powering the new Landmaster is the in-house caliber 8L35, created to withstand harsh environments. This highly accurate movement was assembled and adjusted by the skilled craftsmen and women of Shizukuishi. On the bracelet, an adjuster function allows the user to adjust the length easily so that the watch can be worn over heavy Arctic clothing.

Movement
Movement 8L35
Automatic with manual winding
Precision +15 to -10 seconds per day
Power reserve  50 hours
Jewels 26
Functions
Stop second hand function
Date display
Case/Band Titanium (super-hard coating)
Case Size 
Thickness:12.7mm
Diameter:42.0mm
Lug-to-lug:50.1mm
Sapphire crystal with Super-clear coating
Lumibrite on hands and index(es)
Bracelet Length 200.0mm
Distance between lugs 20mm
Water Resistance 20 bar
Magnetic Resistance 4,800 A/m
Weight 137.0g

LIMITED EDITION of 1000 
Serial number on the case back
Rotating compass bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back

The Navigator Timer GMT (recreation of 1968 original) SPB411



Seiko Prospex has re-created the model from 1968 that was Seiko’s first GMT to feature a rotating bezel. The new limited edition is as faithful as possible to the classic sports design and compact dimensions that characterized the late-‘60s Navigator Timer. A distinctive five-row bracelet glitters to complete the watch’s classic and luxurious look. On the dial, the Seiko logo follows the design of the original model. The GMT, hour, and minute hands, as well as the indexes, also follow the Navigator Timer design. With its independently adjustable GMT hand and 24-hour rotating bezel, this handsome traveler’s watch can display the time in three places at once.

Movement
Caliber Number 6R54
Movement Automatic with manual winding
Precision +25 to -15 seconds per day
Power reserve Approx. 72 hours(3 days)
Jewels 24

24-hour hand (dual time display function)
Stop second hand function
Case/Band Material  Stainless steel (super hard coating)

Case Size
Thickness:12.6mm
Diameter:38.5mm
Lug-to-lug:45.2mm

Box shaped sapphire crystal with Anti-reflective coating on inner surface
LumiBrite on hands, index(es) and bezel
Three-fold clasp with push button release
Distance between lugs 19mm

Water Resistance 10 bar
Magnetic Resistance 4,800 A/m
Weight 131.0g

LIMITED EDITION of 4000
Rotating bezel
Screw case back




Key Points from the Discussion

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The Discussion
MA
Marcus Hanke
Oct 5, 2023

I had no intention to buy another Seiko, but this one is very tempting, indeed! Marcus

SA
SALMANPK
Oct 5, 2023

As tempting as the new one is the original series was so special and still has my heart. S

CA
cazalea
Oct 5, 2023

I like these watches very much. Maybe it’s time to replace one of the Landmasters I sold. This one I kept. Cazalea

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