Sinn

556 A

Reference Number :

556.014

Series : Tool Watch

Retail: $1,433

(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 556 A is pure Sinn, all function and no fluff. Think of it as the understated tool watch that whispers quality. It's got that classic pilot vibe, with its clean, super-legible dial and satinized steel case, but it's also versatile. No huge numbers, no unnecessary complications – just the essentials, beautifully executed. That SW200-1 movement ticks away reliably, visible through the exhibition caseback, a reminder of the craftsmanship within. The anti-reflective sapphire on both sides makes the view so crisp. It's tough, water-resistant enough for real-world adventures, and that luminous paint means you'll always know the time, no matter how dark it gets. It's the kind of watch that gets better with age, gaining character with every scratch. The 556 A becomes a part of your own personal history.

DescriptionThe Sinn 556 A, reference number 556.014, is characterized by its instrument-focused design and robust construction. The case, constructed from satinized stainless steel, measures 38.5 mm in diameter and 11 mm in thickness. The design demonstrates a clear emphasis on legibility and functionality, reminiscent of traditional pilot watches. A band lug width of 20mm is integrated and the entire case without a band is listed as 65 grams. The screw-fastened case back and screwable crown contribute to the watch's water resistance, which is rated to 20 bar, meeting the standards outlined in DIN 8310. This construction also confirms it is low pressure resistant. The sapphire crystal is implemented both for the front crystal which has an anti-reflective coating on both sides, as well as the transparent display case back which has a anti-reflective coating only on the interior.

Powering the 556 A is the SW200-1, a self-winding mechanical movement produced. This caliber features 26 bearing jewels and operates at a frequency of 28,800 semi-oscillations per hour (4 Hz). Furthermore, it is equipt with a seconds stop function, often refered to as 'hacking', which allows for precise time setting. The movement is also anti-magnetic, conforming to the DIN 8309 standard, adding protection from magnetic fields that could otherwsie negatively effect the timekeeping. The watch face showcases a matte black dial. Numerals and indices are generously coated with luminescent material, maximizing visibility under all conditions. Matching this treatment, the hour and minute hands are also coated with the same luminous paint. The included functions are displayed: hours, minutes, and seconds, with a date display.

GenderUnisex

SignaturesSinn

Country of OriginGermany

Case Size38.5 mm

MovementAutomatic

CaliberSW200-1

FunctionsHours, Minutes, Seconds, Date

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSapphire Crystal

CrownScrew Down