SpecStudio
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Seiko Seiko HDB GMT
$409Stock unknown
Case
- Diameter
- 39.4mm
- Thickness
- 13.6mm
- Lug-to-lug
- 47.9mm
- Material
- Stainless Steel
- Water resistance
- 100m
Crystal & dial
- Crystal
- Hardlex
Movement
- Caliber
- Seiko 4R34
- Type
- Automatic
- Power reserve
- 41h
2 colorways
The market
Market prices.
Retail$409
eBay listings
- SEIKO 5 Sports HDB001J Wristwatch Watch Automatic Field GMT Olive Drab w/ BoxNew with box and papers · JP$335
- Seiko 5 Sports Field GMT HDB001J Olive Drab Automatic Mens Watch Japan AuthenticNew with box and papers · JP$382
- Seiko 5 Sports Field GMT HDB001J Olive Drab Automatic Mens Watch SilverNew with box and papers · JP$382
Lowest displayed prices first.
Matched listings from our latest checks; eBay may show additional results. We may earn a commission through these links at no extra cost to you.
Retail stock & market context
Seiko on the secondhand market
+8.1%
2026 so far · +3.6% to +12.7% · 80 matched watches
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In a nutshell
The Seiko Seiko HDB GMT is an automatic watch, with a 39.4mm stainless steel case, 13.6mm thick, powered by the Seiko 4R34 movement and a 41-hour power reserve. Water resistance is rated to 100m, under a hardlex crystal. Manufacturer MSRP is $409.
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