Description
Seiko quartz wristwatch
MADE IN JAPAN
“Seiko” (精工) is a Japanese word meaning “precision,” “exquisite workmanship,” or “refined craftsmanship.”
It comes from the characters:
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精 (sei) – fine, precise, refined
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工 (ko) – craft, workmanship
Originally, Seiko’s watchmaking division was called Seikosha (精工舎), meaning “House of Precision.”
The name first appeared on a watch dial in 1924, shortened from Seikosha and keeping the core meaning; the company itself was renamed Hattori Seiko in 1983 and Seiko Corporation in 1990.
So the brand name literally ties directly to the idea of precision engineering —which is exactly what the company wanted to be known for in its watches.
🕰️About Seiko Brightz Line
The Seiko Brightz collection is Seiko’s Japanese Domestic Market line of business dress watches, positioned above the Spirit and Seiko Selection ranges. It is where Seiko fits its “set-and-forget” technologies — solar charging and radio time correction — into conservatively sized dress cases. Brightz was sold through Japanese retailers only, so examples outside Japan are imports rather than watches Seiko exported itself.
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DESCRIPTION
This is the Seiko Brightz SAGZ047, a Japanese-market solar radio watch built on caliber 7B24 in a stainless steel case, ref. 7B24-0AE0. The case back is stamped MADE IN JAPAN, STAINLESS STEEL and 10 BAR WATER RESISTANT, and its serial dates the watch to July 2011.
Precision Engineering on Full Display
The dial is black with a fine vertical lined texture, ringed by a printed outer track carrying the three station names the watch can receive — WWVB, BPC and JJY — and the H, L, N and Y positions the second hand points to when it reports signal strength and whether the last reception succeeded. Applied polished baton indices run round the dial, with a triple bar at 12 and a framed date window at 3. The crystal is sapphire, and the case flanks stand proud of the crown and of the two recessed buttons.
Solar power and radio time-setting
A solar cell under the dial charges the movement’s rechargeable cell, so there is no routine battery change: Seiko rates a full charge at about six months of running in the dark, or roughly a year and a half with the power-save function active. The watch sets itself from a longwave time signal at 2:00 AM, retrying at 3:00 and 4:00 if the first attempt fails. Caliber 7B24 can receive three signals — JJY in Japan (two transmitters, 40 and 60 kHz), BPC in China (68.5 kHz) and WWVB in the United States (60 kHz, Fort Collins). There is no European signal it can use; outside those reception areas it simply runs as a quartz watch, which Seiko rates at ±15 seconds a month.
Technical Details & Specifications
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Model Code: Seiko Brightz SAGZ047 (JDM Exclusive)
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Case & Movement Reference: 7B24-0AE0
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Movement Type: Solar quartz, caliber 7B24, with radio time correction on the JJY, BPC and WWVB signals; ±15 seconds a month when no signal is received
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Dial: Black with a vertical lined texture, applied polished baton indices, triple bar at 12, date at 3, and printed station markings (WWVB, JJY, BPC)
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Case Material: Stainless steel, with case flanks shrouding the crown and the two recessed buttons
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Bracelet: Brushed and polished stainless steel bracelet on a signed Seiko push-button folding clasp
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Water Resistance: 10 bar (100 m / 330 ft), as marked on the case back
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Calendar Feature: Full auto calendar — no date correction needed up to 31 December 2099
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Produced: July 2011 (case back serial 170193)
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Origin: Made in Japan, marked on the case back
This watch has recently been serviced by a professional watchmaker and keeps good time.
Comes complete with steel bracelet*. (*)Note: Stock bracelets are often shortened by previous owners and may not fit you(see bracelet size in the product images). We match the strap to this watch’s lug width, so there is nothing for you to measure — just pick a padded leather strap for Seiko from the options at the top of the page.
This watch ships from 🇺🇦 Ukraine with tracking number
Why This Watch?
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Brightz-grade finishing: applied polished indices, faceted hands and mirror-polished case flanks against a fine vertically lined dial.
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Three-signal radio correction: unlike the JJY-only Japanese models, this one also receives WWVB in the United States and BPC in China, so it keeps itself set anywhere inside those three reception areas. There is no European signal it can use.
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Built for daily wear: a sapphire crystal, a case that shrouds the crown and buttons, and 10 bar (100 m) water resistance.
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Nothing to wind, nothing to set: light keeps it charged and the nightly reception keeps it on time, with about six months of reserve from a full charge.
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Dress proportions: a compact three-hand case with a plain bezel and no sub-dials — it sits under a shirt cuff and reads as a dress watch rather than a tech watch.
Modes of payment:
- PayPal
- Credit Cards (VISA, MasterCard, American Express, Discover)
- bitcoin
We guarantee the item you receive looks and works exactly as advertised — or your money back.
Seiko lug-width matched leather straps — 18 / 19 / 20 mm
About the watch factory
Seiko Group Corporation (セイコーグループ株式会社, Seikō Gurūpu kabushiki gaisha), commonly known as Seiko, is a Japanese maker of watches, clocks, electronic devices, and semiconductors. Founded in 1881 by Kintarō Hattori in Tokyo, Seiko introduced the world’s first commercial quartz wristwatch in 1969. Seiko is widely known for its wristwatches. Seiko is one of the few watch companies that is fully vertically integrated. Seiko is able to design and develop all the components of a watch, as well as assemble, adjust, inspect and ship them in-house. Seiko’s mechanical watches consist of approximately 200 parts, and the company has the technology and production facilities to design and manufacture all of these parts internally.
Seiko offers one of the widest ranges of watch technologies in the world— quartz, kinetic, solar, mechanical, and Spring Drive —spanning everything from affordable everyday pieces to six-figure haute horlogerie. Over the decades it has launched multiple global brands, including Lorus, Pulsar, and Alba, while elevating its prestige through innovations like Spring Drive, which helped push Seiko into higher-end territory. In 2017, Grand Seiko was spun off into its own standalone luxury brand, while Credor remains part of Seiko’s own lineup, sold primarily in Japan. Seiko’s own global lineup now includes Grand Seiko, King Seiko, Prospex, Astron, Presage, and Seiko 5 Sports.
Among Seiko’s key lines, Seiko 5 (born in 1963) is the gateway mechanical series known for durability and value; Lord Matic defined 1970s style with faceted crystals and colorful dials; Astron remains Seiko’s flagship GPS-solar tech line; Presage focuses on traditional mechanical craftsmanship with enamel and urushi dials; and Prospex delivers professional-grade dive, field, and pilot watches often embraced by enthusiasts. At the top end, Grand Seiko emphasizes precision, Zaratsu polished design, and movements like Spring Drive, while King Seiko —revived in the 2020s—brings back sharp, elegant 1960s styling with modern calibres.
Finally, Credor represents Seiko’s pinnacle of artisanal watchmaking, producing low-volume pieces in precious metals and showcasing Japanese decorative arts and haute complications from the Micro Artist Studio. Beyond watches, Seiko has also produced various electronic devices and, historically, jewelry and eyewear—though those divisions have since shifted to other companies.
