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
43
Listings

Families

Classic Timepieces

Diving Watches

Frankfurt Financial District

Instrument Chronographs

Instrument Watches

Ladies Watches

Special Edition

Current Listings

[WTS] Sinn 903 St II - Black dial - fine link bracelet

Sinn 903 St II - Black dial - fine link bracelet

Sinn - 903 St II · $3,800
Up for sale is the new version of the Sinn 903 st in excellent condition. Case and bracelet are very clean.

  • Condition: Excellent
  • Case diameter: 41mm
Posted at
May 7, 2026, 3:16 PM
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[WTS] Sinn 105 St Sa on bracelet

Sinn 105 St Sa on bracelet

Sinn - 105 St Sa · $1,550
This Sinn 105 St Sa is a high-end watch that has been lightly used. It features a rugged design and a reliable movement.

  • Condition: Pre-owned with cosmetic damage on the clasp
  • Bracelet condition: cosmetic damage on the clasp
  • Links included: true
  • Leather strap: original
Posted at
May 7, 2026, 12:54 PM
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[WTS] Sinn 556 I B Sunburst Blue Dial — Cal. ETA2824 Top Grade — Box & Papers — $1,699 Shipped (Tariff Covered)

Sinn 556 I B Sunburst Blue Dial — Cal. ETA2824 Top Grade — Box & Papers — $1,699 Shipped (Tariff Covered)

Sinn - 556 I B · $1,699
A versatile modern German watch with a clean and balanced design, featuring a blue sunburst dial that changes from dark navy to metallic blue depending on lighting.

  • Condition: Pre-owned, unpolished with honest signs of wear
  • Case size: 38.5mm diameter
  • Lug-to-lug length: 45.5mm
  • Thickness: 11mm
Posted at
May 7, 2026, 11:13 AM
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[WTS] Sinn 140/142 D1 90s.

Sinn 140/142 D1 90s.

Sinn - 140/142 D1 · $2,000
This is a vintage Sinn 140/142 D1 from the early to mid 1990s. It features a desirable tritium marked dial and lovely patina to the markers and hands.

  • Condition: great condition, lovely patina to the markers and hands
  • Service history: unknown
  • Powers reserve: 5100
  • Accuracy per day: 5 seconds
Posted at
May 5, 2026, 3:46 PM
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[WTS] Sinn U50 SL Lume Dial Limited Edition

Sinn U50 SL Lume Dial Limited Edition

Sinn - U50 SL Lume Dial Limited Edition · $2,990
This is the standout 2024 release from Frankfurt: a fully luminescent dial variant of the legendary U50 diver.

  • Condition: 9.5/10
  • Case material: German Submarine Steel
  • Coating: Black Hard Coating on TEGIMENT Technology base (highly scratch-resistant)
  • Dimensions: 41mm diameter | 11.2mm thickness | 47mm lug-to-lug
Posted at
May 4, 2026, 8:40 PM
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[WTS] Sinn 103 St Sa

Sinn 103 St Sa

Sinn - 103 St Sa · $1,750
The Sinn 103 St Sa is a pilot chronograph with day-date complication and automatic mechanical chronograph movement based on the Valjoux 7750.

  • Condition: Very good, minor cosmetic wear
  • Case diameter: 41mm
  • Water resistance: 200m (20ATM)
  • Movement type: Automatic mechanical chronograph
Posted at
May 4, 2026, 1:15 PM
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[WTS] Sinn U50 Tegimented Bracelet

Sinn U50 Tegimented Bracelet

Sinn - U50 · $2,700
For sale is a Sinn U50 with a Tegimented bezel and bracelet, coming with traditional clasp and diver extension. It includes all links, sized for a 17.5 cm wrist, and comes in its original box with papers.

  • Bracelet type: Tegimented
  • Clasp style: traditional
  • Extension: diver
Posted at
May 2, 2026, 6:47 PM
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[WTS] Sinn 936 S Black Chronograph Fully Tegimented Limited Edition (100) - New Release

Sinn 936 S Black Chronograph Fully Tegimented Limited Edition (100) - New Release

Sinn - 936 S Black Chronograph Fully Tegimented · $4,950
The recently released limited edition Sinn 936 S Black Chronograph Fully Tegimented is a fully tegimented chronograph with only 100 pieces produced. It comes with complete box and papers.

  • Condition: New
  • Limited edition: only 100 pieces produced
  • Msrp: $5270 (US)
  • Shipping included: continental USA only
Posted at
May 2, 2026, 1:00 PM
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[WTS] Sinn 556 I RS on H-Link Bracelet Excellent Condition $1200 shipped

Sinn 556 I RS on H-Link Bracelet Excellent Condition $1200 shipped

Sinn - 556 I RS · $1,200
A Sinn 556 I RS watch with a red seconds hand, designed for legibility in low-light conditions and durability around magnetic fields. It's sold new retailing over $1500+, but the seller is offering it for $1200 shipped.

  • Condition: Excellent Condition
  • Bracelet: H-Link
  • Clasp: OEM fliplock clasp
Posted at
May 2, 2026, 12:18 PM
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