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FAST and FREE shipping on all watch purchases.
Orders received by 4 PM ET ship the same business day.

THE SPECIALISTS

GERMAN MECHANICAL WATCHES

Sinn 556 Collection

Only Brand New Watches  

All our watches are brand new, unworn, and arrive to us directly from Germany.

✓ Official and Authorized  

WatchBuys is the official authorized distributor/importer for all our brands.

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Watches ship free to the US, Canada, Puerto Rico, Guam, and APO/FPO/DPO.

New Releases:

  • Hanhart Aquasphere Matte Black

    Hanhart Aquasphere Matte Black

  • Sinn 544

    Sinn 544

  • Stefan Kudoke 2 Tremblage Gold Dial

    Stefan Kudoke 2 Tremblage

  • Hanhart Preventor HD12 Green Dial Limited Edition

    Hanhart Preventor HD12 Green Dial Limited Edition

HANHART

Aquasphere Matte Black

New 2026 Release | Ceramic bezel and helium escape valve

This watch was built to meet the technical demands of professional freedivers. But with its balance of form and function, the Hanhart Aquasphere Matte Black is an extremely versatile watch suited for any environment. The Hanhart Aquasphere's 42 mm case is water resistant to 300 meters and features a helium escape valve. The bezel inlay is created from durable ceramic.

Diameter

42.0 mm

Case Height

12.95 mm

Lug to Lug

49.0 mm

Water Res.

300 meters

Dial color

Matte black

Learn More
SINN

544

New 2026 Release | Automatic winding mechanical watch with 60+ hour power reserve

The Sinn 544 may be a brand new addition to Sinn's collection of tool watches, but the design language is actually inspired by models like the Sinn 244 and the Sinn 444 from the early 2000s. At 38.5 mm, the midsize case of the new Sinn 544 hits the sweet spot for most wearers today. The hours are labeled around the dial on a fixed interior bezel, and the white seconds hand contrasts starkly against the matte black dial for excellent legibility.

Diameter

38.5 mm

Case Height

10.1 mm

Power Reserve

60+ hours

Water Res.

200 meters

Calibre

SW 200-2

Learn More
STEFAN KUDOKE

Kudoke 2 Tremblage Gold Dial

New 2026 Release | Manufacture movement Kaliber 1-24H with engraved gold dial

Stefan Kudoke must apply a traditional hand engraving technique with deep roots in classical Saxon watchmaking to create the 2N gold plated "tremblage" dial for this Kudoke 2. The term "tremblage" originates from the French word "trembler," meaning to tremble or vibrate, which directly describes the specific physical motion required to execute the unique finish. To achieve this textured surface, Stefan uses a fine graver to hand work the dial through countless individual strokes. Because the engraving process is performed entirely by hand, the resulting texture on each individual dial is inherently unique.

Diameter

39.0 mm

Case Height

11.0 mm

Power Reserve

46 hours

Dial Color

Gold tremblage

Calibre

Kudoke 2

Learn More
HANHART

Preventor HD12 Green Dial Limited Edition

New 2026 Release | 36 mm HD12 hardened steel case and green dial

This new 200 piece limited edition features a deep green dial inspired by the Black Forest region of Germany (Hanhart's home) in a compact but versatile 36 mm case size.

Diameter

36.0 mm

Case Metal

HD12 steel

Water res.

150 meters

Watch Height

10.5 mm

Calibre

SW200-1

Learn More

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ENGINEERED FOR DEPTH

Hanhart Aquasphere Diver Collection


The Hanhart Aquasphere Collection is designed specifically for free diving. A helium escape valve is located at 10, which enhances the watch's functionality for extreme diving depth. Without a helium escape valve, the internal pressure can build up during deep sea dives. The valve allows the helium to escape safely, preventing any damage to the watch.
Sinn
Sinn Automated Showcase
Watch Head
Watch Head Next
Sinn

Finally, a band that stays together.

Need help choosing the correct strap for your Sinn watch? We're happy to help: (888)-333-4895

Need help choosing the correct strap for your Sinn watch? We're happy to help:

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on future purchases

Weekly Arrivals

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week directly from our brands

HANHART
417 ES 1954

"Came across this Hanhart love the history of the brand and the model. Great quality and love the hand winding. Definitely recommend."

— James L.

SINN
556 A RS

"This is my first Sinn watch and it absolutely exceeded all expectations. You really do not understand the care, quality and craftsmanship until you put it on."

— Jon B.

SINN
U50-T

"This was my first Sinn watch... The watch and process exceeded my expectations. The watch arrived in perfect condition."

— Spencer S.

DORNBLUETH
CALIBRE 99.1

"Exceeded my every expectation. After a lot of research, I had high (likely unrealistic) expectations for this watch, and I am glad to report it exceeded all of them and more."

— Kenneth H.

HANHART
PIONEER ONE

"Received my Hanhart Pioneer One 3 days after ordering from Watchbuys. Awesome service. Would buy from again without hesitation."

— Greg

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