Thumbnail [WTS] Seiko SPB313 – Slim Turtle – Full Kit – Excellent Condition – $620 1

Thumbnail [WTS] Seiko SPB313 – Slim Turtle – Full Kit – Excellent Condition – $620 2

Thumbnail [WTS] Seiko SPB313 – Slim Turtle – Full Kit – Excellent Condition – $620 3

Thumbnail [WTS] Seiko SPB313 – Slim Turtle – Full Kit – Excellent Condition – $620 4

Thumbnail [WTS] Seiko SPB313 – Slim Turtle – Full Kit – Excellent Condition – $620 5

Model:	Seiko Turtle	Last Scraped:	June 9, 2025, 5:12 p.m.
Username:	wilau	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

For sale is a Seiko SPB313 “Slim Turtle” from the Prospex Diver line Condition: Excellent. No visible marks on the case, crystal, or bracelet. Includes: Full kit – inner/outer box, all bracelet links, manuals, and warranty card dated 2023. JDM model Asking Price: **Reduced $620** CONUS via USPS Priority. No trades please. Located in California Specs: • Case Size: 41 mm • Lug to Lug: 46.6 mm • Thickness: 12.3 mm • Lug Width: 20 mm • Crystal: Sapphire • Movement: 6R35 automatic (70-hour power reserve) • Reference: SPB313 • Retail: $1,100

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Highest:	$999	Lowest:	$5
Median:	$355.00	Std. Dev:	±$170.04

Estimated Private Party Value $299 — $585


	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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