All Seiko lines › Astron › Other Astron
Seiko Astron, 43.5 mm (5X53)
2 versions of this watch are on Seiko's own sites right now, across 2 regions. Last checked Nov 13, 2026.
Estimated US price: About $2,935, converted from Seiko's list price in EUR.
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
- 5X53
- Case diameter
- 43.5 mm
- Thickness
- 13.3 mm
- Lug to lug
- 50.7 mm
- Variants listed now
- 2
- Regions
- 2
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 |
|---|---|---|---|---|---|---|---|---|
 | SSH009 Also coded SSH009J1 | Not published | Not stated 115 g | Titanium (lapisan super keras) dengan bezel keramik Seiko's regional wording | Regular | 2 regions Indonesia, Portugal | 2,650 EUR Portugal · Nov 13, 2026 about $2,935 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. | ||||||||
 | SSH011 Also coded SSH011J1 | Not published | Not stated 115 g | Titanium (lapisan super keras) dengan bezel keramik Seiko's regional wording | Regular | 2 regions Indonesia, Portugal | 2,650 EUR Portugal · Nov 13, 2026 about $2,935 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 | GPS surya | Seiko product page |
|---|---|---|
| Functions | Fungsi pencegahan overcharge Fungsi hemat daya Kalender abadi hingga 28 Februari 2100 Fungsi waktu dunia (39 zona waktu) Fungsi waktu ganda Tampilan hari Tampilan cadangan daya Fungsi transfer waktu (Beralih antara dial-utama dan sub-dial) Fungsi penerimaan sinyal GPS (Penyesuaian zona waktu, penyesuaian waktu otomatis, penyesuaian waktu manual) Fungsi tampilan status akuisisi satelit Fungsi tampilan hasil penerimaan DST (Waktu Musim Panas) Berfungsi untuk mencegah penerimaan sinyal GPS (in-flight mode) Fungsi penyelarasan posisi tangan otomatis | Seiko product page |
| Power reserve / battery | Pengoperasian untuk kira-kira. 6 bulan (saat terisi penuh), hemat daya: kira-kira. 2 tahun | Seiko product page |
| Water resistance | 10 bar | Seiko product page |
| Crystal | Safir | Seiko product page |
| Lug width | 21 mm | Seiko product page |
| Seiko case codes | 5X53-0AD0 | Seiko catalog data |
Why these share a page
Every version here is published by Seiko with calibre 5X53 and either the same Seiko case code or the same case size. 4 reference codes lead to this page.
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.