All Seiko lines › Prospex › Sea
“Mini Turtle”
Seiko Prospex Sea, 42.3 mm (4R35)
Collector nickname. Where the name comes from
4 versions of this watch are on Seiko's own sites right now, across 4 regions. Last checked Nov 13, 2026.
Estimated US price: About $440 to $485, converted from Seiko's list prices in 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
- 4R35
- Case diameter
- 42.3 mm
- Thickness
- 13 mm
- Lug to lug
- Not published
- Variants listed now
- 4
- Regions
- 4
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 |
|---|---|---|---|---|---|---|---|---|
 | SRPC37 Also coded SRPC37K1 | Not published | Silicone Seiko's regional wording | Stainless steel Translated from Seiko's regional page | Regular | 3 regions Brazil, Indonesia, Thailand | 16,500 THB Thailand · Nov 13, 2026 about $485 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. | ||||||||
 | SRPC39 Also coded SRPC39K1 | Not published | Silicone Seiko's regional wording | Stainless steel Translated from Seiko's regional page | Regular | 3 regions Brazil, Indonesia, Thailand | 16,500 THB Thailand · Nov 13, 2026 about $485 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. | ||||||||
 | SRPC35 Also coded SRPC35K1 | Not published | Not stated | Stainless steel Translated from Seiko's regional page | 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. | ||||||||
 | SRPC41 Also coded SRPC41K1 | Not published | Silicone Translated from Seiko's regional page | Stainless steel Translated from Seiko's regional page | Regular | 2 regions Indonesia, Philippines | 28,190 PHP Philippines · Nov 13, 2026 about $440 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 | 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. 41 horas Some variants are published as: Approx. 41 jam | Seiko product page |
| Water resistance | Mergulho 200 metros /660 pés Some variants are published as: Penyelam 200m / 660 kaki | Seiko product page |
| Crystal | Hardlex | Seiko product page |
| Lug width | 20 mm | Seiko product page |
| Seiko case codes | 4R35-01Y0, 4R35-02K0 | Seiko catalog data |
Why these share a page
Every version here is published by Seiko with calibre 4R35 and either the same Seiko case code or the same case size. 8 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.
| “Mini Turtle” | Collector nickname. Source names SRPC35K1. “Perhaps my Seiko 7002 in his zombie costume would be a more suitable Halloween companion, but there’s something about the feature-packed SRPC35K1 “Mini Turtle” that just keeps me coming back.” | Fratello read 2026-11-12 |
|---|
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