Thumbnail [WTS] Sinn 657 S ($1349 shipped worldwide) 1

Thumbnail [WTS] Sinn 657 S ($1349 shipped worldwide) 2

Thumbnail [WTS] Sinn 657 S ($1349 shipped worldwide) 3

Thumbnail [WTS] Sinn 657 S ($1349 shipped worldwide) 4

Thumbnail [WTS] Sinn 657 S ($1349 shipped worldwide) 5

Thumbnail [WTS] Sinn 657 S ($1349 shipped worldwide) 6

Model:	Sinn 657	Last Scraped:	April 13, 2025, 10:17 p.m.
Username:	Dense_Many7444	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

Hey team. Up for sale is a superbly well maintained Sinn 657 S (2008). This model has been discontinued by Sinn, which is a shame, because it offers a tonne of tech for the money. **Movement** ETA 2824-2 Anti-magnetic as per DIN 8309 (= 1 Milgauss = 80,000 A/m) **Dimensions and Weight** Case diameter: 41 mm Band lug width: 20 mm Case thickness: 12 mm Weight without strap: 77 gramme **Case** Case made of stainless steel, matte black chrome-plated Sapphire crystal glass in front, anti-reflective on both sides Case back screw-fastened, nickel-free Pressure-resistant up to 20 bar Low pressure resistant **Please note the following** The watch will ship from New Zealand. The price includes shipping to anywhere in the world. The hybrid strap is super comfortable, though a tad frayed at the lower section. The watch will also ship with a Zulu strap (pictured). (Feel free to read feedback from my other sales. Happy to field FaceTime if you want to have a chat!)

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	Established:	1961
	Website:	http://www.sinn.de/de/
	Country of Origin:	Germany

Sinn Spezialuhren GmbH is a manufacturer of mechanical wristwatches based in Frankfurt am Main. The company was founded in 1961 by flight instructor and pilot Helmut Sinn under the name ‘Helmut Sinn Spezialuhren’.

Following its foundation in 1961, the company focused on the manufacture of navigation cockpit clocks and pilot chronographs and sold these through direct selling, bypassing retailers. The clocks and watches were produced according to pilot Helmut Sinn’s specifications in the private label sector in Switzerland. By eliminating the trade margin of the retailers, the company was able to offer its clocks and watches at a lower price than through traditional sales channels.

In 1994, Helmut Sinn sold the company to Lothar Schmidt. Following the sale, he acquired Swiss watchmaker Guinand in 1996. In 1998, he set up a new company in Frankfurt am Main. With this company, he offered brand watches from Jubilar, Chronosport and the newly acquired Guinand. In 2006, he retired from business activity. Since handing over the management of the business to his long-standing employee Horst Hassler, he now acts as an advisor to the company. On September 3rd 2016 Helmut Sinn celebrated his 100th birthday.

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