All Seiko lines › Prospex › Sea
Seiko Prospex Sea, 44.8 mm (8L55)
2 versions of this watch are on Seiko's own sites right now, across 8 regions. Last checked Nov 13, 2026.
Estimated US price: About $6,310 to $7,795, converted from Seiko's list prices in AUD, EUR, MYR and more.
Retailers ask: no retailer listing matched yet.
Photos are Seiko's own, shown from Seiko's sites. Click a photo to jump to that version.
- Calibre
- 8L55
- Case diameter
- 44.8 mm
- Thickness
- 15.7 mm
- Lug to lug
- 51.4 mm
- Variants listed now
- 2
- Regions
- 8
Listed means the watch was on an official Seiko regional site or store at the last check. It does not mean it is in stock, and it does not tell us whether Seiko is still making it.
Versions listed now
Same case and movement in every row. What changes is the colour, the strap or bracelet, the finish and where Seiko sells it. Seiko's spec sheets don't state dial colour, so a colour appears only where Seiko's US store tags one.
| Photo | Reference | Colour | Strap / bracelet | Case | Edition | Listed in | Seiko list price | Buy |
|---|---|---|---|---|---|---|---|---|
 | SLA039 Also coded SLA039J1 | Not published | Silicone | Ever-Brilliant Steel | Orologio subacqueo edizione limitata 55° anniversarioSeiko Diver's Watch 55th Anniversary Limited EditionSeiko Diver’s Watch 55. Yıl Dönümü Limitli Üretim Modeli | 7 regions | 7,000 EUR Italy · Nov 13, 2026 about $7,795 in US dollars | No seller matched yet |
Where Seiko lists it (7 sites) and its list pricesBuying options (0)No seller offer has been matched to this exact variant yet. | ||||||||
 | SLA025 Also coded SLA025J1 | Not published | Silicone Translated from Seiko's regional page | Baja tahan karat (lapisan super keras) dengan bingkai cincin baja tahan karat Seiko's regional wording | Seiko Prospex The 1968 Automatic Diver’s Re-creation Limited Edition | 2 regions Indonesia, Portugal | 5,700 EUR Portugal · Nov 13, 2026 about $6,310 in US dollars | No seller matched yet |
Where Seiko lists it (2 sites) and its list pricesBuying options (0)No seller offer has been matched to this exact variant yet. | ||||||||
Where to buy
No retailer listing has been matched to a version on this line yet.
Estimated US prices use Seiko's US list price where there is one. Otherwise they are the middle of Seiko's list prices in other countries, converted at rates dated Nov 12, 2026 from ExchangeRate-API (free open endpoint). Those list prices include each country's sales tax, so a converted figure usually runs higher than a US price would. Retailer prices are asking prices on the date shown, not sold prices, and leave out shipping, tax and import charges.
The build
| Movement | Automatic with manual winding | Seiko product page |
|---|---|---|
| Functions | 36,000 vibrations per hour (10 beats per second) Stop second hand function Date display | Seiko product page |
| Power reserve / battery | Approx. 55 hours | Seiko product page |
| Water resistance | 300m / 1000ft for saturation diving | Seiko product page |
| Crystal | Dual-curved sapphire crystal | Seiko product page |
| Lug width | 19 mm | Seiko product page |
| Seiko case codes | 8L55-00D0, 8L55-00F0 | Seiko catalog data |
Why these share a page
Every version here is published by Seiko with calibre 8L55 and either the same Seiko case code or the same case size. 4 reference codes lead to this page.
Seiko publishes no lug-to-lug for these versions: SLA025. They are on this page because the calibre, diameter and thickness match.
Holden's Watch Desk is an independent catalog. It is not affiliated with, sponsored by or endorsed by Seiko. Seiko and its model names are trademarks of their owners, and the product photos are Seiko's, shown from Seiko's own sites to identify each watch. To report a mistake or ask for something to be removed, email holden@holdenswatchdesk.com.