Seiko Introduces the Diver’s Watch 55th Anniversary “62MAS” and “6105”

More vintage-remake divers.

Seiko is marking the 55th anniversary of its first diver’s watch with remakes – yet again. The Prospex 1965 Diver’s Re-creation SLA043 modelled on the 62MAS 6217, while the Prospex 1970 Diver’s Modern Re-interpretation SPB183 takes its cues from the 6105-8110.

Initial thoughts

Seiko is certainly not short on diver’s watches: it introduced the 55th anniversary trilogy in March, as well as a green-dial LX diver a few months later. This pair feels like two watches too many, especially since they aren’t that different from watches launched before.

1970 Diver’s Modern Re-interpretation SPB183J1 (left), and 1965 Diver’s Re-creation SLA043J1

It’s a given that both possess all of the intrinsic appeal of Seiko dive watches – solid construction, excellent case finishing, and a robust movement. The two watches also enjoy strong historical legitimacy given Seiko’s immense track record in dive watches.

But not only does there seem to be too many Seiko limited editions, both are not quite as afforably priced as Seiko dive watches once were. They are still reasonably priced, but no longer as compelling.


The 1965 Diver’s Re-creation SLA043 is a remake of the first-ever Seiko dive watch, the 6217 “62MAS” of 1965. Like earlier 62MAS remakes, this is larger than the original at 39.9 mm in diameter.

Notably, it is slimmer than the remake from the diver’s watch trilogy launched earlier in the year, because this is powered by the 8L35 running at 4 Hz instead of the high-frequency 8L55 that beats at 5 Hz.

Like the watches of the trilogy, this has a case made of Ever-Brilliant Steel, an alloy with higher corrosion resistance than the typical stainless steel used for watch cases. And it also has a brighter, more silvery tone, as opposed to the greyish look of standard steels.


The more affordable 1970 Diver’s Modern Re-interpretation SPB183 is based on the ref. 6105-8110, which was distinguished by its turtle-shaped case (and already remade last year).

The case and bezel are steel that’s been protected with Seiko’s proprietary, carbon-based “super hard coating” that improves its surface scratch resistance. And it has been enhanced by the Zaratsu polishing of the topmost edge of the bezel. Most commonly used to finish the entire case on Grand Seiko watches, Zaratsu is a technique for flat polishing that produces an extremely flat, mirror-finished surface.

This is powered by the 6R35, an automatic movement found in most of Seiko’s mid-range watches but still equipped with a convenient, 70-hour power reserve.

Key facts

Seiko Prospex 1965 Diver’s Re-creation “62MAS”
Ref. SLA043J1 (SBDX039 in Japan)

Diameter: 39.9 mm
Height: 14.1 mm
Material: Steel
Water resistance: 200 m

Movement: 8L35
Features: Hours, minutes, seconds, and date
Winding: Automatic
Frequency: 28,800 beats per hour (4 Hz)
Power reserve: 50 hours

Strap: Black silicone with pin buckle; additional blue silicone strap

Limited edition: 1,700 watches
From November 2020 at Seiko boutiques and retailers
Price: US$4,500; or ¥480,000 (prices exclude tax)

Seiko 1970 Diver’s Modern Re-interpretation “6105”
Ref. SPB183J1 (SBDC123 in Japan)

Diameter: 42.7 mm
Height: 13.2 mm
Material: Steel
Water resistance: 200 m

Movement: 6R35
Features: Hours, minutes, seconds, and date
Winding: Automatic
Frequency: 21,600 beats per hour (3 Hz)
Power reserve: 70 hours

Strap: Steel bracelet, and additional silicon strap

Limited edition: 5,500 watches
From November 2020 at Seiko boutiques and retailers
Price: US$1,400; or ¥150,000 (prices exclude tax)

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