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.

155
Watches
7
Families
42
Listings

Families

Classic Timepieces

Diving Watches

Frankfurt Financial District

Instrument Chronographs

Instrument Watches

Ladies Watches

Special Edition

Current Listings

[WTS] Sinn 856.011 Box & Extra Straps $1500 Shipped

Sinn 856.011 Box & Extra Straps $1500 Shipped

Sinn - 856.011 · $1,500
A classic German tool watch known for its clean design, exceptional legibility, and rugged everyday performance.

  • Condition: Used, signs of wear; mark on hour hand; clean crystal
  • Case Size: 40mm diameter
  • Movement: Automatic
  • Crystal: Sapphire
Posted at
May 2, 2026, 9:53 AM
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[WTS] Sinn 356 Sa GR Chronograph Power Reserve 2017 on fine link bracelet ref 356.15940

Sinn 356 Sa GR Chronograph Power Reserve 2017 on fine link bracelet ref 356.15940

Sinn - 356.15940 · $3,150
A German tool watch with a black dial and power reserve indicator, housed in a fine link bracelet.

  • Condition: Very healthy, no service history
  • Movement: Valjoux 7750 automatic movement
  • Case diameter: 38.5 mm
  • Band lug width: 20 mm
Posted at
May 1, 2026, 9:18 PM
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[WTS] Sinn 356 Pilot Chronograph – Black Dial Classic, Pure Tool Watch DNA

Sinn 356 Pilot Chronograph – Black Dial Classic, Pure Tool Watch DNA

Sinn - 356 · $2,400
A compact and highly versatile tool watch with a matte black dial, tri-compax layout, and automatic chronograph movement. It wears well on various wrists due to its vintage proportions and modern capability.

  • Condition: Great overall condition, light signs of wear
  • Case size: 38.5mm diameter
  • Movement: Valjoux 7750 base, Automatic chronograph
  • Crystal: Acrylic crystal
Posted at
May 1, 2026, 8:16 PM
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[WTS] Sinn 157 Chronograph Full Set Neo-Vintage Tritium

Sinn 157 Chronograph Full Set Neo-Vintage Tritium

Sinn - 157.M · $3,150
A steel matte variant of the vintage pilot chronograph produced between 1993 and 2004, featuring a tritium dial and Lemania 5100 self-winding automatic movement.

  • Condition: Excellent, minimal signs of wear and polish
  • Case width: 40mm
  • Lug-to-lug: 44.3mm
  • Lug width: 20mm
Posted at
May 1, 2026, 11:13 AM
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[WTS] Sinn U212 SDR #77/212 Limited Edition

Sinn U212 SDR #77/212 Limited Edition

Sinn - U212 SDR #77/212 · $2,950
A limited edition Sinn U212 SDR tegimented watch, certified for diving and featuring Ar-dehumidifying Technology to prevent fogging. The watch has a high-strength seawater-resistant German Submarine Steel case and a sapphire crystal glass. It is pressure-resistant up to 100 bar.

  • Condition: Pre-owned with minor cosmetic damage (1mm ding on the case)
  • Serial Number: #77/212
  • Case Material: German Submarine Steel with TEGIMENT Technology
  • Water Resistance: 100 bar
Posted at
May 1, 2026, 10:02 AM
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[WTS] Sinn 556 I RS

Sinn 556 I RS

Sinn - 556 I RS · $1,375
A Sinn 556 I RS from 2022 in good condition with a perfect crystal and accurate timekeeping. It comes with its original box, tools, papers, and certificate, as well as a leather strap.

  • Condition: good condition
  • Year: 2022
  • Owner history: 2nd owner
Posted at
May 1, 2026, 1:06 AM
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[WTS] Super Rare Sinn 356 UTC – travel time – $4,999

Super Rare Sinn 356 UTC – travel time – $4,999

Sinn - 356 UTC · $4,999
This rare Sinn 356 UTC edition features a travel time function. It's in worn but good condition and comes with a Delugs strap sized for a 7 inch wrist.

  • Condition: Worn but good condition
  • Size: delugs strap sized for a 7 inch wrist
Posted at
Apr 30, 2026, 1:53 PM
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[WTS] Sinn U50 S L - LE Full Lume Dial - 363/500

Sinn U50 S L - LE Full Lume Dial - 363/500

Sinn - U50 S L · $2,700
Highly sought-after Sinn U50 S L, one of only 500 pieces worldwide with a limited edition full lume dial. Signed warranty card and instruction manual included.

  • Serial Number: 363/500
  • Warranty: signed warranty card
  • Case Condition: Sinn box was trashed, using aftermarket travel case
Posted at
Apr 30, 2026, 11:59 AM
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[WTS] Sinn U50 S L - Limited Edition Full Lume Dial 363/500 - Papers, No Box

Sinn U50 S L - Limited Edition Full Lume Dial 363/500 - Papers, No Box

Sinn - U50 S L · $2,700
A highly sought-after limited edition Sinn U50 S L with a full lume dial and one of only 500 pieces worldwide. It comes with the signed warranty card and instruction manual.

  • Limited edition number: 363/500
  • Papers included: true
Posted at
Apr 30, 2026, 11:42 AM
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