Head-To-Head: Seiko Alpinist SPB117J1 (6th Generation) versus Seiko Alpinist SARB017 (5th Generation)

The Alpinist is classic line of sports watches from Seiko. It is a series of watches designed in 1959 for mountain climbers. The first is the iconic Laurel Alpinist. The most famous of all the Alpinist and a cult classic, the SARB017 is the face of the series. This is the 5th generation Alpinist and it was launched in 2006. In 2020, Seiko launched the 6th generation Alpinist with updated movement. 

I have the SPB117J1 (below and left) and the SARB017 (below and right). In this short write-up, I will be comparing both watches.

1. Model & Generation

• SPB117J1 (2020):
  Part of the 6th-generation Alpinist (Prospex line). Successor to the SARB017, released after Seiko discontinued the SARB series.

• SARB017 (2013):
  5th-generation Alpinist, a "cult classic" discontinued in 2018. Often considered the face of the series.

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2. Key Upgrades in SPB117J1 vs. SARB017

Feature	SPB117J1 (2020)	SARB017 (2013)
Movement	Caliber 6835 (70h power reserve)	Caliber 6R15 (50h power reserve)
Accuracy	+25/-15 sec/day (tested at +7.9 sec/day)	+25/-15 sec/day (no test data)
Crystal	Sapphire + inner AR coating + date magnifier	Sapphire (no AR/magnifier)
Caseback	Display caseback (Hardlex crystal)	Solid caseback (engraved mountain logo)
Water Res.	20 BAR (200m)	200m
Dimensions	39.5mm × 13.2mm × 46.4mm lug-to-lug	38mm × 12mm × 46mm lug-to-lug
Crowns	Sterile (unsigned)	Signed ("S" on main crown)

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3. Design & Aesthetics

• Dial:

  • SPB117J1: Gloss black dial, uniform markers, red "20 BAR" text (unique in series).

  • SARB017: Sunburst green dial, gold markers/hands (iconic).

• Date Window:
  Both at 3 o'clock, but SPB117J1 adds a magnifier (polarizing; disrupts symmetry).

• Hands & Markers:
  Both use cathedral hands and Lumibrite lume. SPB117J1 has polished applied markers vs. SARB017's gold accents.

• Bezel:
  Identical bidirectional internal compass bezel (Arabic numerals + triangle markers).

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4. Bracelet/Strap

• SPB117J1:
  Stainless steel bracelet (non-tapering 20mm) with dress-style clasp. Rationale: Bracelets are costlier aftermarket; this model is the only one in the 2020 series with a bracelet.

• SARB017:
  Brown leather strap with standard buckle (criticized for lacking deployment clasp or branding).

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5. Purchasing Context

Aspect	SPB117J1	SARB017
Release Price	¥77,000 / $750 / RM3,925	¥50,000 (~$475 in 2013)
Purchase Price	RM2,747 (30% discount in Malaysia)	~35% discount in Tokyo (2013)
Availability	Global release (Jan 2020)	JDM (Japanese Domestic Market)
Rarity	First batch limited; serial no. 980228	Discontinued (prices spiked in 2018)

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6. Author's Preferences

• SPB117J1:
  Chosen for its bracelet and uniqueness (minority variant). Praised as an "all-rounder" but critiqued for the date magnifier and non-tapering bracelet.

• SARB017:
  Loved for its green dial and classic design. Criticized for the date window disrupting indices and basic buckle.

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7. Collector's Perspective

• SARB017:
  Discontinuation created scarcity; became a sought-after classic.

• SPB117J1:
  Expected future valuation premium due to being the only bracelet model in its series (similar to SARB013/SARB015 vs. SARB017).

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Conclusion

• Evolution: The SPB117J1 modernizes the Alpinist with technical upgrades (movement, AR coating, display caseback) but sacrifices some of the SARB017’s iconic charm (green dial, signed crown).

• Target Audience:

  • SARB017: Purists seeking heritage and elegance.

  • SPB117J1: Pragmatists valuing versatility (bracelet option, improved specs).

• Trade-offs: The 2020 model enhances functionality, while the 2013 model remains an unmatched aesthetic icon.

💎 Key Insight: Both exemplify Seiko’s "gentleman adventurer" ethos, but the SPB117J1 leans into tool-watch practicality, while the SARB017 embodies vintage refinement.

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