All Seiko lines › Prospex › Sea
“62MAS”
Seiko Prospex Sea, 39.9 mm (8L55)
Collector nickname. Where the name comes from
1 version of this watch is on Seiko's own sites right now, across 3 regions. Last checked Nov 13, 2026.
Estimated US price: About $7,905, converted from Seiko's list prices in SGD, TRY.
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
- 39.9 mm
- Thickness
- 14.7 mm
- Lug to lug
- 47.9 mm
- Variants listed now
- 1
- Regions
- 3
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.
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 | Otomatis dengan kapasitas lilitan manual | Seiko product page |
|---|---|---|
| Functions | Hentikan fungsi jarum detik Tampilan tanggal | Seiko product page |
| Power reserve / battery | Approx. 55 jam | Seiko product page |
| Water resistance | Penyelam 200m / 660 kaki | Seiko product page |
| Crystal | Safir berbentuk kotak | Seiko product page |
| Lug width | 19 mm | Seiko product page |
| Seiko case codes | 8L55-00E0 | 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. 2 reference codes lead to this page.
What people call it
A name is shown only where a source ties it to a reference on this page. Collector nicknames are not Seiko's names unless the row says so.
| “62MAS” | Collector nickname. Source names SLA037. “The 1965 “62MAS” Re-Creation, the SLA037” The name belongs to Seiko's 1965 diver. The source calls this watch its reissue or re-interpretation. | Monochrome Watches read 2026-11-12 |
|---|
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.

