Automatic Self-Winding Movement
The 556 I is powered by an automatic self-winding movement, so it runs mechanically with motion from the wearer.
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Updated 4 months ago
German automatic tool watch with minimalist black dial, 200m water resistance, and satin-finished case.

The 556 I is powered by an automatic self-winding movement, so it runs mechanically with motion from the wearer.
Rated to 20 bar, this watch provides 200 m water resistance for added everyday versatility.
A 38.5 mm satinized stainless steel case with 11.0 mm thickness gives the watch a clean tool-watch profile.
The Sinn 556 I is a German automatic tool watch with a minimalist black analog dial, satinized stainless steel case, sapphire crystal, date display, and 200 m water resistance.
The reviewer praises the Sinn 556 I as a masterclass in functional German design with no wasted elements, noting that its proprietary technologies offer real-world benefits for the price.
The review describes the 556i as a great, straightforward, and well-executed German sport watch that is easy to wear and versatile, though the author noted the lume was less than stellar.
The review highlights the 556i as a masterclass in minimalism, praising its build quality, versatility, and industrial design, while noting that inflation has impacted its value and suggesting the inclusion of a leather strap alongside the bracelet would improve the package.
The reviewer characterizes the 556i as an excellent, highly versatile timepiece that serves as a tough, minimalist everyday watch, though they note it lacks the high-tech features found in more expensive models from the brand.
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| Attribute | Specification | Notes |
|---|---|---|
| Band Width | 20 mm | mm |
| Case Diameter | 38.5 mm | mm |
| Case Material | stainless steel, satinized | |
| Case Thickness | 11 mm | mm |
| Clasp Type | pin buckle | |
| Crystal Material | sapphire crystal (sapphire crystal glass) | |
| Display Type | analog | |
| Features | date | |
| Movement Type | automatic (self-winding) | |
| Power Source | automatic (self-winding) | |
| Water Resistance | 20 m | m |

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