Instrument Watches
Series 240 C
Ref. 240.021
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.
Families
Instrument Watches
Series 240 C St GZ
Ref. 240.011
Instrument Watches
Series 240 St
Ref. 240.010
Instrument Watches
Series 556 A
Ref. 556.014
Instrument Watches
Series 556 Anniversary
Ref. 556.0103
Instrument Watches
Series 556 I
Ref. 556.010
Instrument Watches
Series 556 I M
Ref. 556.0101
Instrument Watches
Series 556 I Mother-of-pearl W
Ref. 556.0102
Instrument Chronographs
Space Chronograph 140 St
Ref. 140.020
Instrument Chronographs
Space Chronograph 140 St S
Ref. 140.030
Special Edition
Special Edition 956 Adler
Ref. 956.015
Current Listings
![[WTS] Sinn 856s black pvd Watch](https://preview.redd.it/wt8jv72vyjhg1.jpg?width=640&crop=smart&auto=webp&s=593c5c4c70b369013c2c9acaed7a790fd245f9d7)
Sinn 856s black pvd Watch
This Sinn 856s is a black PVD watch with two additional leather straps from Greg Stevens Design, one of which is pictured in the listing.
- Condition: Excellent
- Age: less than one year old
- Additional Straps: 2
- Price Additional Straps: 200
![[WTS] Sinn 356 Flieger 2026 Full Kit - Price Reduction](https://preview.redd.it/xj73r6ioyihg1.jpg?width=640&crop=smart&auto=webp&s=77b2d4d76df15067c5a67afaca96648c199a8176)
Sinn 356 Flieger 2026 Full Kit - Price Reduction
This Sinn 356 Flieger features a beautiful bead blasted finish and a domed acrylic crystal. The movement is a Sellita SW500 based on the classic Valjoux 7750 chrono movement.
- Condition: Brand new, less than 10 minutes of wrist time
- Case size: 42mm diameter
- Water resistance: 100m depth rating
- Bracelet material: H-link bracelet
![[WTS] Sinn 556i RS Full Kit](https://preview.redd.it/iu09mmcc8ihg1.jpg?width=640&crop=smart&auto=webp&s=15b69391e015fb172a9cee85fe592c2fcc5916ed)
Sinn 556i RS Full Kit
A Sinn 556i RS sold as a full kit with various accessories, purchased in August 2025 and showing minimal signs of wear.
- Condition: Like new with minimal wear
- Bracelet type: Sinn H-Link Bracelet
- Movement accuracy: +1-3 s/d
![[WTS] Sinn 867 UTC on Tegimented H-Link Bracelet](https://preview.redd.it/2hz4kjpkibhg1.jpg?width=640&crop=smart&auto=webp&s=5e47a757cd30bde72eb0119f503031bdab80ca05)
Sinn 867 UTC on Tegimented H-Link Bracelet
A dual time zone watch inspired by historic Sinn NaBo clocks, featuring a tegimented case and bracelet with magnetic field protection up to 80,000 A/m.
- Watch diameter: 40mm
- Water resistance: 200m
- Movement: Automatic mechanical (SW330-1)
![[WTS] Sinn 556. Box, Links. $1150 only !!](https://preview.redd.it/dc4o31t0kxgg1.jpeg?auto=webp&s=de0dba0e1a824272b3c36886a15430048f37f27c)
Sinn 556. Box, Links. $1150 only !!
a daily wear Sinn 556 for sale, includes box and links.
- Box: true
- Links: true
![[WTS] Sinn 356 2025 Full Set $2,400](https://preview.redd.it/nva3eah7spgg1.jpg?width=640&crop=smart&auto=webp&s=ca5caa7ee4423a89f2f46d90f64837ebd861c82a)
Sinn 356 2025 Full Set $2,400
Selling a Sinn 356 2025 Full Set with additional details available in the provided Imgur link.
- Set: full set
![[WTS] Sinn Arktis II 206 Automatic Diver / Extreme Weather Chronograph - Stunning Blue Dial - $6K retail, full kit, still under Sinn warranty, 1 DAY ONLY FIRE SALE $2825 SHIPPED 🚨🚨](https://preview.redd.it/cjwbb478yogg1.jpg?width=640&crop=smart&auto=webp&s=95f018f40f37da6f8aea378142e56d72a04fd065)
Sinn Arktis II 206 Automatic Diver / Extreme Weather Chronograph - Stunning Blue Dial - $6K retail, full kit, still under Sinn warranty, 1 DAY ONLY FIRE SALE $2825 SHIPPED 🚨🚨
Sinn Arktis II 206 Automatic Diver / Extreme Weather Chronograph, featuring a stunning blue dial and full kit, still under Sinn warranty.
- Condition: Great
- Price Paid: $6,000
- Retail Price: $6,000
- Warranty Status: Under warranty
![[WTS] Sinn EZM1 mission timer](https://preview.redd.it/k1adv2kw4kgg1.jpg?width=640&crop=smart&auto=webp&s=b81a3e662f798c5ca5e536c8d870d6cb280e7d77)
Sinn EZM1 mission timer
A Sinn EZM1 mission timer watch made of titanium, featuring a Lemania 5100 self-winding mechanism and various technical specifications. It has been serviced by Sinn in 2018 and comes with one additional link.
- Case material: titanium
- Case diameter: 40mm
- Band lug width: 20mm
![[WTS] Sinn 103 Classic 12 Reverse Panda Chronograph - Stunning Limited Edition 2021 - Watch Only - Great Condition Runs Beautifully - $3200 shipped CONUS](https://preview.redd.it/vr6rh1hupigg1.jpg?width=640&crop=smart&auto=webp&s=acb4280790d841bb285e6fe9058769d8a0683041)
Sinn 103 Classic 12 Reverse Panda Chronograph - Stunning Limited Edition 2021 - Watch Only - Great Condition Runs Beautifully - $3200 shipped CONUS
This Sinn 103 Classic 12 Reverse Panda Chronograph is a stunning limited edition from 2021. It has been thoroughly cleaned and serviced, with the movement running beautifully. The watch is in excellent condition.
- Condition: Great Condition
- Water resistance: 100m