| Product Categories | Wristwatches from entry level to luxury; group also makes clocks, electronic devices and semiconductors | Fine jewellery, engagement rings, sterling silver, watches, home and accessories, leather goods, fragrance | — | — |
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| Signature Collections | Prospex, Presage, Astron, Seiko 5 Sports, King Seiko; related brands Grand Seiko, Credor (mainly Japan), Lorus, Pulsar, Alba | Tiffany Setting engagement ring (1886), Tiffany T, Tiffany HardWear, Schlumberger | — | — |
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| Watch Movements | In-house mechanical (automatic), quartz, Kinetic, solar, Spring Drive and GPS solar (Astron); vertically integrated manufacturer | — | — | — |
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| Price Positioning | Broad range from about ¥4,000 (~US$45) to ¥50 million; Presage mostly US$200–3,000 | Luxury; spans sterling silver pieces to high jewellery | — | — |
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| Warranty | Not verified | Watches: 5-year limited warranty against material and manufacturing defects; signed warranty certificate required | — | — |
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| Servicing & Repairs | Repairs and battery replacement via Authorized Seiko Service Centers; Seiko recommends servicing about every three years | — | — | — |
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| Personalisation & Engraving | — | Engraving and personalisation offered; personalised, altered or engraved items are not eligible for return or exchange | — | — |
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| Responsible Sourcing | — | Discloses region/country of origin for registered diamonds 0.18 ct+ (since 2019) and crafting countries (Diamond Craft Journey, 2020); owns polishing workshops in 6 countries | — | — |
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| Returns Policy | — | US: 30 days for credit or exchange in saleable condition with receipt; purchases of $75,000+ exchange only; returns only in country of purchase | — | — |
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| Founded | 1881, Tokyo (K. Hattori, by Kintarō Hattori); HQ Ginza, Tokyo | 1837, New York City, US | — | — |
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| Parent Company | Seiko Group Corporation (Hattori family holding company); Seiko Epson is a separate company | LVMH (acquired January 2021) | — | — |
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| Key Materials | Titanium and ceramic cases on select models; gold and platinum on Credor pieces | Sterling silver, precious metals, diamonds, coloured gemstones (e.g. tsavorite, morganite, kunzite), pearls | — | — |
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| Notable Innovations | Astron (1969), first commercial quartz wristwatch; Spring Drive (1999); Astron GPS Solar (2012) | — | — | — |
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