Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch
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Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch 1Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch 2Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch 3Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch 4Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch 5Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch 6Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch 7
Seiko

Seiko Prospex Alpinist SPB505J1 Black Dial Automatic 39.5 mm New Men's Watch

SPB121
Deal Score25
$990
Watch OnlyCondition: Very Good

Why This Score?

Poor deal: good condition, priced at market. Verify seller reputation before purchasing..

Key Drivers
Good condition
Priced at market
Low seller trust score
Watch only (no box or papers)

The model prioritized pricing data from 13 comparable sales over a 90-day window.

Watch Specs

39.5mm
Diameter
46.4mm
Lug to Lug
13.2mm
Thickness
20mm
Lug Width
Caliber
6R35
Movement
Automatic
Crystal
Sapphire
Case Material
SS
Dial
Green
Strap
Leather
MSRP:
$725
Introduced:
2020

Perceived Size

How it wears, not just how it measures

~48mm

vs 46mm L2L

Compact (36mm)Substantial (60mm)

↑ 13.2mm case thickness adds +2mm wrist presence

Will this fit your wrist?

Slide to your wrist circumference to see the fit diagram.

Wrist circumference17 cm
12cm17cm (avg)22cm

Sold Comps (180 days)

FULL SETBOX ONLYPAPERS ONLYWATCH ONLYAsking Price
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