Model:	Sinn U50	Last Scraped:	March 18, 2025, 7:47 p.m.
Username:	OldGlory_00	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

[Excellent Condition]() Includes Box and Papers Silicone strap sized for 6.80 inch wrist Extra Nylon Strap Purchased 2024 $2,200 no trades CONUS only. The Sinn U50 Hydro is a dive watch crafted by the renowned German watch manufacturer Sinn Spezialuhren. At the heart of the U50 Hydro is its innovative Hydro Technology, which involves filling the watch case with oil to counteract the effects of pressure underwater and increasing legibility with reflection-free underwater readability from any angle and absolute freedom from fogging. This technology enables the watch to withstand water pressure up to 5000 meters (500 bar), making it suitable for professional diving. The case is made from German submarine steel with the famous TEGIMENT technology, which is a hardening of the outer layer of the material to make it ultra-tough and resistant to scratches and dings. Midsize diver's watch with quartz movement and oil filled case • Watch diameter (mm): 41.0 • Watch height (mm): 11.8 • Lug width (mm): 20 • Lug to lug (mm): 47 • Weight - head only (grams): 72 • Water resistance: 5,000 meters • Case back: Solid • Case finish: Matte • Case metal: Submarine steel • Dial color: Black • Front crystal: Sapphire • Tegimented: Bezel only • Calibre: Ronda 715 Li • Movement: Quartz oil filled

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Highest:	$3,950	Lowest:	$1,575
Median:	$2,650.00	Std. Dev:	±$525.98

Estimated Private Party Value $2,375 — $3,063


	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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