556 I
The 556 I by Sinn is built for daily use, not for the display cabinet. Inside the 38.5 mm stainless steel case runs the Sellita SW200-1 calibre (automatic, approx. 38 hrs power reserve). The sapphire crystal and 200 m water resistance give the watch practical credentials; it is worn on the stainless steel bracelet, in daily life and at the office. A tool first, a piece of jewellery second.
All technical data comes from manufacturer information and is checked against manufacturer or retailer pages before inclusion. The editorial rating is our assessment of technology, build quality and value for money in the class, not a lab test. The guide price is based on the recommended retail price; you can always see the current price in the shop. More about how we work →
The 556 I data in detail
Movement, case and features decide how a watch performs in daily life. Here the key data of the 556 I are gathered clearly in one place, as in the manufacturer's data sheet.
Suits you if...
Our assessment based on technology, build quality, versatility and value for money in the respective class. We will show genuine user reviews as soon as they are available.
There are no user reviews for this model yet. You can find our editorial assessment on the left.
Frequently asked questions about the 556 I
Here you will find short, clear answers about the 556 I by Sinn. The details help you judge size, movement, water resistance and price. That way you can decide faster whether the watch suits you.
How big is the 556 I?
The 556 I measures 38.5 mm in diameter and 11 mm in height. That puts the watch in the versatile middle range; what matters is that the lugs do not extend beyond your wrist.
Which movement powers the 556 I?
The 556 I is powered by the Sellita SW200-1 automatic calibre with around 38 hours of power reserve. It winds itself via the rotor while you wear it.
Is the 556 I water resistant?
The 556 I is pressure-tested to 200 m, which makes it suitable for swimming, snorkelling and most dives. The metre rating is a test pressure, not a diving depth.
How much does the 556 I cost?
The 556 I (38.5 mm) has a guide price of approx. €1,200, based on the recommended retail price. This model is currently not listed at our partner shops; the guide price is for orientation.
What occasion is the 556 I suited to?
The 556 I suits everyday wear and the office best. This follows from its robust look, its size and its sapphire crystal and stainless steel bracelet.
Which watches are similar to the 556 I?
Khaki Field Mechanical by Hamilton, Weekender 38 by Timex and Expedition Scout 40 by Timex go in a similar direction. They share the watch type or a related concept and are worth comparing before you buy.
Related guides
More guidance on the 556 I: these guides go deeper into watch type, technology and buying decisions, and help you compare it with other models.