All Seiko lines › Prospex › Sea
“62MAS”
Seiko Prospex Sea, 42.6 mm (6R15)
Collector nickname. Where the name comes from
3 versions of this watch are on Seiko's own sites right now, across 5 regions. Last checked Nov 13, 2026.
Estimated US price: About $930 to $1,105, converted from Seiko's list prices in EUR, PHP, THB.
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
- 6R15
- Case diameter
- 42.6 mm
- Thickness
- 13.8 mm
- Lug to lug
- Not published
- Variants listed now
- 3
- Regions
- 5
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 |
|---|---|---|---|---|---|---|---|---|
 | SPB051 Also coded SPB051J1 | Not published | Not stated | Aço Inoxidável (revestimento rígido) com bisel de aço inoxidável Seiko's regional wording | Regular | 3 regions Brazil, Indonesia, Italy | 999 EUR Italy · Nov 13, 2026 about $1,105 in US dollars | No seller matched yet |
Where Seiko lists it (3 sites) and its list pricesBuying options (0)No seller offer has been matched to this exact variant yet. | ||||||||
 | SPB053 Also coded SPB053J1 | 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 | Regular | 3 regions Indonesia, Philippines, Thailand | 53,250 PHP Philippines · Nov 13, 2026 about $930 in US dollars | No seller matched yet |
Where Seiko lists it (3 sites) and its list pricesBuying options (0)No seller offer has been matched to this exact variant yet. | ||||||||
 | SPB071 Also coded SPB071J1 | Not published | Silicone Seiko's regional wording | Aço inox (revestimento super rígido) Seiko's regional wording | Regular | 2 regions Brazil, Indonesia | No price shown | 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 | Automático com capacidade de corda manual Some variants are published as: Otomatis dengan kapasitas lilitan manual | Seiko product page |
|---|---|---|
| Functions | Função de parada do segundo ponteiro Visor de data Some variants are published as: Hentikan fungsi jarum detik Tampilan tanggal | Seiko product page |
| Power reserve / battery | Aprox. 50 horas Some variants are published as: Approx. 50 jam | Seiko product page |
| Water resistance | Mergulho 200 metros /660 pés Some variants are published as: Penyelam 200m / 660 kaki | Seiko product page |
| Crystal | Cristal de safira curva Some variants are published as: Safir melengkung | Seiko product page |
| Lug width | 20 mm | Seiko product page |
| Seiko case codes | 6R15-03W0, 6R15-04B0 | Seiko catalog data |
Why these share a page
Every version here is published by Seiko with calibre 6R15 and either the same Seiko case code or the same case size. 6 reference codes lead to this page.
Seiko publishes no lug-to-lug for this watch. Versions with different Seiko case codes are on one page because the calibre, diameter and thickness match.
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 SPB051. “Seiko has also announced a “re-interpretation” version of the 62MAS in the form of the SPB051/053, which also falls under the Prospex line.” The name belongs to Seiko's 1965 diver. The source calls this watch its reissue or re-interpretation. | Worn & Wound read 2026-11-12 |
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