42.5 MM · AUTOMATIC
Seiko
5 Sports Automatic
SRPD55
Est. market value—
—last 30 days
Seiko
Product photograph · Seiko
Product photograph · SeikoSeiko Prospex Alpinist SPB121J1
A green sunburst dial, golden details and an internal compass bezel. The Alpinist brings its adventurous heritage to a wonderfully versatile everyday watch.
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Seiko Prospex Alpinist: specifications and buying context
This catalogue entry identifies SPB121J1, with a green dial and a 39.5 mm case. The recorded movement is automatic (6R35). Match the reference, condition and included accessories before comparing offers.
- Case diameter
- 39.5 mm
- Movement
- Automatic
- Calibre
- 6R35
- Power reserve
- 70 hours
- Water resistance
- 200 m
- Crystal
- Sapphire
- Dial
- Green
- Reference
- SPB121J1
Product specification source ↗. Specifications describe the catalogue reference; an individual watch may have replacement parts or different accessories.
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These are separate catalogue references, not interchangeable versions or a ranking of quality. Open a reference to check its own prices and listings.
| Watch / reference | Case | Movement | Dial |
|---|---|---|---|
| 5 Sports Automatic SRPD55 | 42.5 mm | Automatic · 4R36 | Black |
How should I read the price?
A retail reference comes from an identified external store. An ask is a seller’s requested price; a bid is a buyer’s offer. Neither proves a completed sale. An empty market estimate or history means that data is unavailable, not that the watch has no value.
How prices and market data work →What should I check before buying?
Confirm the exact reference, photographs of the actual watch, condition, service history, included box and papers, seller identity and total delivery cost. Check the manufacturer’s guidance before relying on the stated water resistance for a used watch.
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ReferenceSPB121J1
MovementAutomatic
Calibre6R35
Case size39.5 mm
Power reserve70 hours
Water resistance200 m
CrystalSapphire
DialGreen
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