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
25
Listings

Families

Classic Timepieces

Diving Watches

Frankfurt Financial District

Instrument Chronographs

Instrument Watches

Ladies Watches

Special Edition

Current Listings

[WTS] Sinn 556i — $1,299 Shipped

Sinn 556i — $1,299 Shipped

Sinn - 556i · $1,299
This Sinn 556i is a lightly worn timepiece with a clean case and minor scratches on the bracelet. It comes with a full kit, including inner and outer boxes, manual, and warranty card.

  • Condition: Very good with typical signs of careful use
  • Case Condition: Very good with no major dings
  • Crystal Condition: Perfect with no scratches
  • Dial Hands Condition: Excellent
Posted at
Nov 17, 2025, 9:31 PM
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[WTS] Sinn 556i – Full Kit – Very Good Condition – Dated Nov 6, 2022 – $1,350 Shipped

Sinn 556i – Full Kit – Very Good Condition – Dated Nov 6, 2022 – $1,350 Shipped

Sinn - 556i · $1,350
Selling my Sinn 556i, a full kit with original papers dated Nov 6, 2022. It's been worn lightly in rotation and is in very good condition.

  • Condition: Very good
  • Case: 38.5mm diameter
  • Lug-to-lug: 45.5mm
  • Thickness: 11mm
Posted at
Nov 17, 2025, 8:39 PM
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[WTS] Sinn 556 i RS

Sinn 556 i RS

Sinn - 556 i RS · $1,050
Sinn 556 i RS on a satinized steel bracelet, brand new and comes with the full kit from an authorized dealer.

  • Condition: Mint, unworn
  • Bracelet type: Satinized steel
  • Case size: 38.5mm
Posted at
Nov 17, 2025, 1:49 PM
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[WTS] Sinn 104 Blue with quick adjust clasp

Sinn 104 Blue with quick adjust clasp

Sinn - 104 · $1,500
The watch features a blue dial and comes with a quick adjust clasp, which is bundled in the sale. It also includes its original box and papers.

  • Condition: pristine with desk-diving scratches on clasp
  • Depth rating:
  • Water resistance:
  • Clasp type: quick adjust
Posted at
Nov 17, 2025, 12:03 AM
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[WTS] 2025 Sinn 556I RS! Full kit from Aug25 with original receipt!

2025 Sinn 556I RS! Full kit from Aug25 with original receipt!

Sinn - 556I RS · $1,300
A Sinn 556I RS in excellent condition, sold as a full kit from Watchbuys with an active warranty.

  • Condition: like new
  • Warranty Status: active
  • Shipping Restricted To: Conus
Posted at
Nov 16, 2025, 7:06 PM
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[WTS] Sinn 856

Sinn 856

Sinn - 856 · $999
A Sinn 856 watch, purchased with a pre-existing scratch, is being sold with additional straps and original packaging.

  • Condition: Pre-owned with minor scratch on dial coating
  • Strap Type: Sinn canvas strap and black Artem sailcloth strap
  • Accessories: warranty,coa card,manual,inner box,outer box
  • Shipping Details: priority shipping within CONUS
Posted at
Nov 14, 2025, 10:57 AM
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[WTS] Sinn 356 II 2 Sa Copper/Salmon Dial. Like New bought by me Oct25!

Sinn 356 II 2 Sa Copper/Salmon Dial. Like New bought by me Oct25!

Sinn - 356 II 2 Sa · $2,900
This Sinn 356 II 2 Sa is a copper and salmon dial watch, purchased from Watchbuys. It's sold out at retail price of $3490.

  • Condition: Like new with minor wear
  • Material: Copper case
  • Strap: Leather strap, unworn
Posted at
Nov 13, 2025, 8:50 PM
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[WTS] Sinn 556 Carnelian Red w Bracelet - $2,195 - NEW

Sinn 556 Carnelian Red w Bracelet - $2,195 - NEW

Sinn - 556 · $2,195
This is a limited edition Sinn 556 Carnelian Red watch, one of only 400 pieces. It features a Sellita SW200 movement and comes with a brand new Sinn bracelet with micro adjustments.

  • Condition: Brand New
  • Case Width: 38.5mm (w/o crown)
  • Lug To Lug Length: 46mm
  • Lug Spacing: 20mm
Posted at
Nov 13, 2025, 8:11 PM
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[WTS] Sinn 556 i Red second 2025

Sinn 556 i Red second 2025

Sinn - 556i · $5,300
Posted at
Nov 13, 2025, 7:53 AM
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