Hobby Bot

Seiko SPB121J1

Prospex Alpinist

2020 –present Retail $725

What Should You Pay?

Estimated fair market values. Actual prices vary by condition, completeness, and seller.

New / Like New / Full Kit
$494 – $642
medium confidence
Excellent / Pre-Owned
$405 – $526
medium confidence
Used / Watch Only
$312 – $405
medium confidence
Fair Market Value
$466
Blended estimate for excellent condition
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This modern reinterpretation of the Alpinist features the classic green sunburst dial that made the original models famous. It combines vintage-inspired elements like cathedral hands and applied indices with modern updates including a sapphire crystal and the 6R35 movement with enhanced power reserve. The bidirectional compass bezel remains a signature functional element.

Specifications
Case Diameter 39.5 mm
Case Height 13.2 mm
Case Material stainless steel
Case Shape round
Case Back exhibition
Lug Width 20 mm
Water Resistance 200m
Crystal sapphire
Bezel Type rotating_bidirectional
Bezel Material stainless steel
Dial Color green
Dial Indexes applied
Dial Hands cathedral
Bracelet/Strap leather
Bracelet Material leather
Clasp pin_buckle
Complications date, compass
Movement
Movement Caliber 6R35
Type automatic
Power Reserve 70 hours
Frequency 21,600 vph
Jewels 24
Functions hours, minutes, seconds, date

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