This listing is a duplicate. A more recent version can be found here.

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 1

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 2

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 3

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 4

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 5

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 6

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 7

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 8

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 9

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 10

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 11

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 12

Thumbnail [WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595 13

Model:	Seiko Brightz	Last Scraped:	Nov. 23, 2025, 9:47 a.m.
Username:	JDM_SEIKO_WATCH	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

Hello r/Watchexchange, I’m selling a Seiko BRIGHTZ SDGC021 Automatic (6R21) in excellent overall condition. The watch runs smoothly and has only minor signs of use — a few small scratches on the caseback and a light mark on the case. The overall appearance is still very clean and attractive. This is a beautifully designed model that has become quite hard to find nowadays. --- Condition & Details: ✅ Case size: 40.5mm | Lug width: 20mm ✅ Case: Sharp, well-finished lines with a refined appearance. ✅ Movement: Seiko 6R21 automatic (45-hour power reserve) – a premium movement from the Brightz line. ✅ Dial: Roman numeral at 12 o’clock with a detailed textured pattern that reflects light beautifully. ✅ Crystal: Dual-sided anti-reflective sapphire – flawless ✅ Strap: Brown handmade leather strap (very stylish and comfortable). Included: Everything shown in the photos 📸 Photos/Timestamp: Included in the post! Price, Payment & Shipping: 💰 Price: $600 USD (shipping not included) – No trades. 💳 Payment: Wise, PayPal Friends & Family, or Goods & Services (+4.6% fee). 🚚 Shipping: FedEx Express worldwide (1–3 days delivery). 📦 Shipping cost: $50–80 USD depending on destination. Thank you very much for looking!

First Posted:	1 month ago	# of Reposts:	3
Starting Price:	$595	Price Change:	16% lower

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First Posted	1 month ago	[WTS] Seiko BRIGHTZ SDGC021 – Excellent Condition – $595	$595
Price Change	2 weeks ago	[WTS] Seiko BRIGHTZ SDGC021 – $535	$535
Price Change	5 days ago	[WTS] Seiko BRIGHTZ SDGC021 –$500	$500

Reputation and Feedback

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The price of this watch is an outlier for this particular model and not included in the distribution. It may be miscategorized, incorrectly priced, or extremely unique.

Highest:	$1,350	Lowest:	$35
Median:	$675.00	Std. Dev:	±$301.42

Estimated Private Party Value $320 — $850


	Established:	1881
	Website:	http://seikousa.com/index.php
	Country of Origin:	Japan

The company was founded in 1881, when Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" (服部時計店 Hattori Tokeiten?) in the Ginza area of Tokyo, Japan. Eleven years later, in 1892, he began to produce clocks under the name Seikosha (精工舎 Seikōsha?), meaning roughly "House of Exquisite Workmanship". According to Seiko's official company history, titled "A Journey In Time: The Remarkable Story of Seiko" (2003), Seiko is a Japanese word meaning "exquisite" or "success" ("exquisite" is usually written 精巧 from Chinese jīngqiǎo, while the meaning "success" is usually written 成功 from Chinese chénggōng).

Seiko is perhaps best known for its wristwatches, all of which were at one time produced entirely in-house. This includes not only major items such as microgears, motors, hands, crystal oscillators, batteries, sensors, LCDs but also minor items such as the oils used in lubricating the watches and the luminous compounds used on the hands and the dials.

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