Sinn

Founded in 1961 by flight instructor Helmut Sinn, the brand has established itself as a leader in professional tool watches. Their innovations include oil-filled cases for perfect underwater legibility and Tegiment technology for enhanced scratch resistance. The brand's expertise spans from pilot chronographs to professional diving watches, with collections like the U-series and 756/956 demonstrating their technical prowess. Each timepiece showcases their commitment to creating robust, functional instruments that meet the highest professional standards.

50
Watches
7
Families
35
Listings

Families

Classic Timepieces

Diving Watches

Frankfurt Financial District

Instrument Chronographs

Instrument Watches

Ladies Watches

Special Edition

Current Listings

[WTS] Sinn 556 I RS

Sinn 556 I RS

Sinn - 556 I RS · $1,000
The Sinn 556 I RS features a glossy black dial and a striking red seconds hand. The satin-finished stainless steel case is in good condition.

  • Condition: Pre-owned - good condition for a daily worn watch
  • Case Size: 38.5mm diameter
  • Case Thickness: 11mm
  • Lug Width: 20mm
Posted at
Apr 18, 2026, 6:52 PM
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[WTS] Sinn 556 I M "Mocha" - Limited Production Chocolate Sunburst Dial - Fine Link + Strap

Sinn 556 I M "Mocha" - Limited Production Chocolate Sunburst Dial - Fine Link + Strap

Sinn - 556 I M · $1,650
The Sinn 556 I M features a stunning mocha-brown sunburst dial and hand-applied, rhodium-plated indices. This versatile watch combines rugged tool-watch elements with sophisticated everyday style.

  • Condition: Great pre-owned condition
  • Bracelet: Sinn Fine Link
  • Strap: Sinn leather strap
  • Water Resistance: 200m depth rating
Posted at
Apr 18, 2026, 5:42 PM
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[WTS] Sinn UX SDR (non-T) with Sinn rubber strap

Sinn UX SDR (non-T) with Sinn rubber strap

Sinn - UX SDR · $2,400
This Sinn UX SDR features a non-tegimented case, black rubber strap with quick-adjust clasp, and a black bezel. The crystal has minimal wear.

  • Condition: Pre-owned, some wear on bezel and bracelet
  • Strap: black rubber strap w/ quick-adjust clasp
  • Wrist Size: 7 inch wrist, rubber strap cut to fit
Posted at
Apr 18, 2026, 3:06 PM
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[WTS] Sinn 104 St Sa Arabic numerals (under Watchbuys warranty)

Sinn 104 St Sa Arabic numerals (under Watchbuys warranty)

Sinn - 104 St Sa Arabic numerals · $1,650
This Sinn 104 St Sa features Arabic numerals, a new Quick-Adjust bracelet, and is still under Watchbuys' warranty. The watch has some noticeable scratches on the clasp and minimal scratches on brushed parts.

  • Condition: Pre-owned with scratches and hairline marks on the case and bracelet
  • Bracelet type: Quick-Adjust
  • Warranty status: Under 2-year warranty from Watchbuys
Posted at
Apr 18, 2026, 2:15 PM
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[WTS] Sinn 556i on Ginault bracelet

Sinn 556i on Ginault bracelet

Sinn - 556i · $1,199
This Sinn 556i is a watch for sale on a Ginault oyster-style bracelet, purchased from an authorized dealer in June 2024. It features moderate buckle rash and light wear throughout the bezel and bracelet.

  • Condition: Good, with some scratches and moderate buckle rash
  • Bracelet type: Ginault oyster-style
  • Year of purchase: 2024
  • Purchase location: Watchbuys
Posted at
Apr 18, 2026, 12:05 PM
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[WTS] Sinn 104 St Sa A - Black with H-link bracelet

Sinn 104 St Sa A - Black with H-link bracelet

Sinn - 104 St Sa A · $1,350
A Sinn 104 St Sa A in black with an H-link bracelet, considered to be in mint condition with only minor scratches.

  • Condition: 9/10 - mint condition with scratches on bracelet
  • Accessories: full-kit (without Sinn tool)
Posted at
Apr 17, 2026, 3:05 AM
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[WTS] Sinn 104 Blue w/ H-link bracelet

Sinn 104 Blue w/ H-link bracelet

Sinn - 104 Blue · $1,350
Looking to sell a Sinn 104 Blue with H-link bracelet, in great condition. The watch comes with accessories.

  • Condition: 8.5/10 with mainly scratches on bracelet and hairlines on case sides
  • Accessories: full-kit (without Sinn tool)
  • Payment Methods: Wise/Revolut/Crypto, Paypal F&F or G&S
Posted at
Apr 17, 2026, 3:03 AM
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[WTS] Sinn 104 RS Matte Special Edition $2300 plus shipping. Paypal

Sinn 104 RS Matte Special Edition $2300 plus shipping. Paypal

Sinn - 104 RS · $2,300
The Sinn 104 RS Matte Special Edition features a white dial, red seconds hand, and is available with a non micro adjust clasp or the matte quick adjust clasp.

  • Condition: Exceptional
  • Bracelet condition: one snail trail on the 6 o'clock side
  • Crystal condition: perfect
Posted at
Apr 16, 2026, 1:43 PM
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[WTS] Sinn U50 SDR Tegimented Full set 2021

Sinn U50 SDR Tegimented Full set 2021

Sinn - U50 SDR
Posted at
Apr 14, 2026, 2:38 PM
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