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
27
Listings

Families

Classic Timepieces

Diving Watches

Frankfurt Financial District

Instrument Chronographs

Instrument Watches

Ladies Watches

Special Edition

Current Listings

[WTS] Sinn U50 HydroMint Condition Full Kit Box and Papers 2025 Warranty

Sinn U50 HydroMint Condition Full Kit Box and Papers 2025 Warranty

Sinn - U50 Hydro SDR · $2,299
The Sinn U50 Hydro SDR is a diving watch with a depth rating of 5,000 meters and features 'Hydro' technology for a reflection-free viewing experience. The case and crown are made of German Submarine Steel, with a tegimented and black-coated bezel.

  • Condition: MINT
  • Warranty Years: 2
  • Water Depth Rating: 5,000m
  • Case Material: German Submarine Steel
Posted at
Dec 22, 2025, 10:50 PM
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[WTS] Sinn 556 A RS full set $1,400+ shipping

Sinn 556 A RS full set $1,400+ shipping

Sinn - 556 A RS · $1,400
A Sinn 556 A RS full set with original shipping packing slips is available for sale. The watch was purchased in 2023, has been well cared for, but shows some normal wear on the bezel/bracelet and clasp dive marks.

  • Condition: Heavy wear, minor marks on clasp, bezel and bracelet
  • Age: 2023
  • Shipping method: Venmo F&F or Zelle, insured to CONUS
  • Communication methods: FaceTime/Whatsapp
Posted at
Dec 22, 2025, 8:27 PM
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[WTS] Sinn 556A + Fine link Bracelet - Excellent condition | $1,250

Sinn 556A + Fine link Bracelet - Excellent condition | $1,250

Sinn - 556A · $1,250
The Sinn 556 A features a black dial and minimalist design, making it a standout piece for collectors and enthusiasts alike. It is a well-known watch from Sinn with signature technical prowess.

  • Condition: Excellent
  • Case material: Satinized stainless steel
  • Diameter: 38.5mm
  • Thickness: 11mm
Posted at
Dec 21, 2025, 6:24 PM
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[WTS] Sinn 556

Sinn 556

Sinn - 556 · $950
A Sinn 556 with a black dial, Arabic numerals, and a 38.5mm x 11mm case is being sold.

  • Condition: VG- with marks on the case and bezel
  • Movement: Caliber 2824
  • Water resistance: 20 bar
  • Depth rating: 200m
Posted at
Dec 21, 2025, 11:50 AM
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[WTS] Sinn U1 Roberto Olivgrün - #16/50

Sinn U1 Roberto Olivgrün - #16/50

Sinn - U1 Roberto Olivgrün · $3,900
A limited edition Sinn U1 watch in Olive Green, one of only 50 pieces.

  • Limited edition number: #16/50
  • Strap condition: brand new and uncut
Posted at
Dec 21, 2025, 9:59 AM
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[WTS] Sinn EZM1 Titanium 503 “Einsatzzeitmesser” EMZ aka Mission Timer!

Sinn EZM1 Titanium 503 “Einsatzzeitmesser” EMZ aka Mission Timer!

Sinn - EZM1 Titanium 503 · $6,450
A performance German tool watch with a titanium case, featuring a mission timer complication and a rotating bezel.

  • Condition: Overall light signs of wear, no damage
  • Case Size: 40mm diameter
  • Lug To Lug: 46.5mm
  • Thickness: 16mm
Posted at
Dec 20, 2025, 6:17 PM
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[WTS] Sinn U50 MOP

Sinn U50 MOP

Sinn - U50 · $3,650
This Sinn U50 Mother of Pearl diver is a well-maintained timepiece with minimal signs of use, thanks to its tegimenting treatment. The watch features a 6.5" wrist size with extra links and comes with original accessories.

  • Condition: Pre-owned with almost no signs of use
  • Case size: 45mm diameter
  • Water resistance: 200m depth rating
  • Extra accessories included: original box, warranty card, booklet, additional rubber strap, and adjustment tool
Posted at
Dec 20, 2025, 2:44 PM
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[WTS] Sinn 856 Fully Tegiment

Sinn 856 Fully Tegiment

Sinn - 856 · $1,700
This Sinn 856 features a Tegiment case, automatic movement, and black dial with Arabic numerals.

  • Condition: VG+ (very few signs of use)
  • Case dimensions: 40mm x 11mm
  • Lug to lug: 48mm
  • Lug width: 20mm
Posted at
Dec 20, 2025, 11:55 AM
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[WTS] Sinn 556 A RS Full Kit (2025)

Sinn 556 A RS Full Kit (2025)

Sinn - 556 A RS · $1,500
This 2025 Sinn 556 A RS is a beautiful watch that comes with various accessories, including a standard length leather strap and the H bracelet.

  • Condition: 9/10
  • Strap type: leather
  • Bracelet size: H
  • Box and papers included: yes
Posted at
Dec 19, 2025, 8:40 PM
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