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:
- 精 (sei) – fine, precise, refined
- 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
A Japanese-market Seiko Brightz SAGZ083, case reference 7B24-0BH0, a model released in September 2015. The case-back serial 910183 dates this example to January 2019. It is a pure titanium dress watch on a matching titanium bracelet, powered by light and set by radio signal — 39 mm across and 76 grams complete, which is noticeably lighter than a steel watch of the same size.
Pure Titanium and a Lined Black Dial
Case, case back and bracelet are pure titanium, finished with Seiko’s Diashield hard coating — the clasp is stamped TITANIUM-D, the “D” marking that coating. Titanium is appreciably lighter than stainless steel and does not provoke nickel reactions. Under a sapphire crystal with Seiko’s Super Clear anti-reflective coating, the dial is black with a fine vertical lined texture, one colour across its whole face, with applied faceted baton indices and a triple baton at 12. The chapter ring carries the station names WWVB, BPC and JJY, and the letters H / L / Y / N that report the result of the last signal reception.
Solar Power and Radio Time Correction
Caliber 7B24 runs on light. The dial charges a rechargeable cell that holds roughly six months of running from full, or about a year and a half with the power-save function active, so there is no annual battery change — though the cell is a service item rather than a permanent part. The watch attempts an automatic reception at 2:00 AM and retries at 3:00 and 4:00. It reads three time signals: JJY in Japan (two transmitters), BPC in China, and WWVB in the United States. There is no European signal in this caliber. Outside those three reception areas the watch runs as an ordinary solar quartz, set by hand, rated ±15 seconds per month.
Technical Details & Specifications
- Model Code: Seiko Brightz SAGZ083 (JDM Exclusive)
- Case Reference: 7B24-0BH0 (caliber 7B24)
- Production Date: January 2019, from case-back serial 910183
- Movement Type: Analog Solar Quartz with Multi-Band Atomic Radio-Controlled Syncing
- Dial: Black with a fine vertical lined texture, applied faceted baton indices, and the WWVB / BPC / JJY station names printed on the chapter ring
- Case Material: Pure titanium, case back included, with Seiko’s Diashield hard coating
- Case Size: Approx. 39 mm wide (excluding crown), 46 mm lug to lug, 8.8 mm thick
- Bracelet: Pure titanium, stamped TITANIUM-D, with a signed Seiko one-push three-fold clasp
- Glass Type: Sapphire crystal with Seiko’s Super Clear anti-reflective coating
- Water Resistance: 10 Bar (100 Meters / 330 Feet), with a screw-down crown
- Weight: 76 grams complete with the bracelet
- Power Reserve: Approx. 6 months from a full charge; approx. 1.5 years with power save active
- Calendar Feature: Fully automatic perpetual calendar valid through December 31, 2099
- 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 titanium bracelet*. (*)Note: Stock bracelets are often shortened by previous owners and may not fit you(see bracelet size in the product images).
This watch ships from 🇺🇦 Ukraine with tracking number
Why This Watch?
- Featherweight Titanium: Case, case back and bracelet are pure titanium, and the complete watch weighs 76 grams — well under a steel watch of the same size, with no nickel to react against.
- Three-Signal Radio Control: Receives the atomic time signals of the United States (WWVB), China (BPC) and Japan (JJY). There is no European transmitter in this caliber — outside those areas it runs as a solar quartz set by hand, at ±15 seconds per month.
- JDM Finishing: A black dial with a fine vertical lined texture, applied faceted baton indices, and a sapphire crystal with Seiko’s Super Clear anti-reflective coating.
- Everyday Durability: 10 Bar (100 m) water resistance, a screw-down crown, and Diashield coating on case and bracelet to resist day-to-day scratching.
- Low Upkeep: Charged by light and, within range of a transmitter, self-setting — no winding and no annual battery change.
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 the 2010s, Grand Seiko and Credor were separated into fully independent luxury brands, while Seiko’s own global lineup now includes Grand Seiko, King Seiko, Prospex, Astron, Presage, and Seiko 5 Sports, with Credor remaining primarily Japan-focused.
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.
