Sinn

556 I B

Reference Number :

556.0104

Series : Tool Watch

Retail: $1,355

(As of: 02/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Sinn. If you are interested in selling this watch to us, you can contact us here.

Quick TakeThe Sinn 556 I B is where elegant design dances with functional prowess. Its rich, sunburst blue dial, set against the cool gleam of satinized stainless steel, projects an aura of subtle confidence. It's not flashy, but a whisper of capable luxury. More than just a pretty face, the 556 I B boasts legitimate tool-watch credentials. With a 20-bar water resistance rating, the Sellita SW200-1 automatic movement visible through the sapphire crystal back, and antimagnetic properties, it's designed for real-world use. The 38.5mm case sits in the aesthetic sweet spot, the perfect size to be bold, yet sophisticated. And then there is the clean, luminescent-coated hands and markers cut through the darkness, providing optimal nighttime readability, a testament to Sinn's focus on utility. This is not your grandfather's watch, it is the wrist of a true explorer that demands much from their tools. The Sinn 556 is not a watch. It's an instrument.

DescriptionThe Sinn 556 I B, reference 556.0104, is built around a self-winding SW200-1 movement. This mechanism, visible through the sapphire crystal case back, incorporates 26 bearing jewels and oscillates at a frequency of 28,800 semi-oscillations per hour (4 Hz). A seconds stop function, also known as hacking, is included, which permits precise time setting. The movement's design includes anti-magnetic properties, meeting the standards defined by DIN 8309. The SW200-1 provides the fundamental functions of hours, minutes, and central seconds. The movement sits inside the sating finished stainless steel case.

The case itself, crafted from satinized stainless steel, measures 38.5 mm in diameter and 11 mm in thickness. The lug width is 20mm. A screw-down crown, along with a screw-fastened case back, contributes to the watch's water resistance rating of 20 bar (approximately 200 meters). This level of water resistance meets the technical specifications defined in DIN 8310, assuring performance under pressure. The watch is also engineered to withstand low-pressure environments. Both the front and the transparent case back are manufactured from sapphire crystal. The front crystal features an anti-reflective coating on both sides, maximizing legibility, while the interior of the case back crystal is similarly treated to reduce glare. The dial, protected beneath the front crystal, showcases a brilliant blue hue, enhanced by a sunburst decorative finish. Manually applied indices are present, and both the indices and the hour/minute hands feature a luminescent coating for visibility in low-light conditions. The watch, without its strap, has a listed weight of 65 grams. The 556.0104 model is available with a Blue cowhide strap, matched with a satinized stainless steel pin buckle.

GenderUnisex

SignaturesSinn

Country of OriginGermany

Case Size38.5 mm

MovementAutomatic

CaliberSW200-1

FunctionsHours, Minutes, Seconds

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSapphire Crystal

CrownScrew Down