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Seiko Prospex Sea
$1,100Stock unknown
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Case
- Diameter
- 41.3mm
- Thickness
- 12.5mm
- Lug-to-lug
- 48.2mm
- Lug width
- 20mm
- Material
- Stainless Steel
- Water resistance
- 300m
Crystal & dial
- Crystal
- Sapphire
- AR coating
- Anti-reflective coating on inner surface
- Lume
- LumiBrite on hands, index(es) and bezel
Movement
- Caliber
- Seiko 6R55
- Type
- Automatic
- Power reserve
- 72h
- Jewels
- 24
Design language
- Case shape
- round
- Dial style
- textured
- Bezel
- rotating
- Bracelet
- lug-attached
- Hands
- baton
AI-detected from the product image
Prospex Sea collection · 33 watches
20 more in this collection
Prospex Sea 1965 Heritage Diver's WatchProspex Sea 1965 Heritage Diver's Watch PADI Special EditionProspex Sea 1968 Heritage Diver's GMTProspex Sea 1968 Heritage Diver's GMT WatchProspex Sea 1968 Heritage Diver's GMT Watch Limited EditionProspex Sea 1970 Heritage Diver's Black Series Limited EditionProspex Sea 1970 Heritage Diver's Save the Ocean Special EditionProspex Sea JAWS 50th Anniversary Limited EditionProspex Sea PADI Special EditionProspex Sea PADI Special EditionProspex Sea PADI Special EditionProspex Sea PADI Special EditionProspex Sea Save the Ocean Special EditionProspex Sea Save the Ocean Special EditionProspex Sea Save the Ocean Special EditionProspex Sea Seiko Diver’s Watch 60th Anniversary Limited EditionProspex Sea Seiko Diver’s Watch 60th Anniversary Limited EditionProspex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited EditionProspex Sea The Black SeriesSumo
3 colorways
Market
Retail$1,100
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Active listings2Across watch forums
Closed · 30d2Asking-price history
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Retail stock & market context
Seiko on the secondhand market
+10.3%
2026 so far · +5.7% to +17.0% · 91 matched watches
In line with the index
Divers as a group: +6.6% · 344 matched watches
Year-by-year readings →Similar watches
Community
Owners and reviewers widely praise the Seiko Prospex Sea for its robust build quality and fair price, with many noting its comfortable silicone strap. Some owners find the watch's size, thickness, and weight to be uncomfortable for smaller wrists, while others consider the size perfect. The consensus is that the Seiko Prospex Sea offers excellent value and build quality for its price.
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