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Seiko quartz, 33.9 mm (5Y66)
4 versions of this watch are on Seiko's own sites right now, across 1 region. Last checked Nov 13, 2026.
Estimated US price: About $200 to $245, converted from Seiko's list price in INR.
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
- 5Y66
- Case diameter
- 33.9 mm
- Thickness
- 8.6 mm
- Lug to lug
- Not published
- Variants listed now
- 4
- Regions
- 1
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 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No Seiko photo link recorded | SNT877 | Not published | Not stated Clasp: Three-fold clasp with push button release | Stainless steel | Regular | 1 region India | 19,000 INR India · Nov 13, 2026 about $200 in US dollars | No seller matched yet | ||||||||
Where Seiko lists it (1 site) and its list prices
Buying options (0)No seller offer has been matched to this exact variant yet. | ||||||||||||||||
| No Seiko photo link recorded | SNT879 | Not published | Not stated Clasp: Three-fold clasp with push button release | Stainless steel | Regular | 1 region India | 19,000 INR India · Nov 13, 2026 about $200 in US dollars | No seller matched yet | ||||||||
Where Seiko lists it (1 site) and its list prices
Buying options (0)No seller offer has been matched to this exact variant yet. | ||||||||||||||||
| No Seiko photo link recorded | SNT880 | Not published | Not stated Clasp: Three-fold clasp with push button release | Stainless steel | Regular | 1 region India | 19,000 INR India · Nov 13, 2026 about $200 in US dollars | No seller matched yet | ||||||||
Where Seiko lists it (1 site) and its list prices
Buying options (0)No seller offer has been matched to this exact variant yet. | ||||||||||||||||
| No Seiko photo link recorded | SNT882 | Not published | Not stated Clasp: Three-fold clasp with push button release | Stainless steel (hard coating) | Regular | 1 region India | 23,000 INR India · Nov 13, 2026 about $245 in US dollars | No seller matched yet | ||||||||
Where Seiko lists it (1 site) and its list prices
Buying 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 | Quartz | Seiko product page |
|---|---|---|
| Functions | 24-hour hand, date hand, and day hand Retrograde day indicator | Seiko product page |
| Power reserve / battery | Approx. 3 years | Seiko product page |
| Water resistance | 5 bar | Seiko product page |
| Crystal | Sapphire crystal | Seiko product page |
| Lug width | 17 mm | Seiko product page |
| Seiko case codes | 5Y66-0BD0, 5Y66-0BE0 | Seiko catalog data |
Why these share a page
Every version here is published by Seiko with calibre 5Y66 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 this watch. Versions with different Seiko case codes are on one page because the calibre, diameter and thickness match.
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