39.5 MM · AUTOMATIC
Seiko
Prospex Alpinist
SPB121J1
Est. market value—
—last 30 days
Seiko
Product photograph · Seiko
Product photograph · SeikoSeiko 5 Sports Automatic SRPD55
A sporty, approachable automatic with a black dial and rotating bezel. The day-date display and familiar Seiko 5 design make it an enduring everyday favourite.
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Estimated value · EUR
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KNOW THE REFERENCE
Seiko 5 Sports Automatic: specifications and buying context
This catalogue entry identifies SRPD55, with a black dial and a 42.5 mm case. The recorded movement is automatic (4R36). Match the reference, condition and included accessories before comparing offers.
- Case diameter
- 42.5 mm
- Movement
- Automatic
- Calibre
- 4R36
- Power reserve
- 41 hours
- Water resistance
- 100 m
- Crystal
- Hardlex
- Dial
- Black
- Reference
- SRPD55
Product specification source ↗. Specifications describe the catalogue reference; an individual watch may have replacement parts or different accessories.
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| Watch / reference | Case | Movement | Dial |
|---|---|---|---|
| Prospex Alpinist SPB121J1 | 39.5 mm | Automatic · 6R35 | Green |
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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The market for this reference
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ReferenceSRPD55
MovementAutomatic
Calibre4R36
Case size42.5 mm
Power reserve41 hours
Water resistance100 m
CrystalHardlex
DialBlack
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