See Sinn for brand overview.
The 556 is Sinn's compact sports-elegant line: a 38.5mm satin stainless steel case, Sellita SW200-1 automatic, 200m water resistance, and a clean dial. Same case and movement across the family. The variants differ on dial colour, indices, date, and the seconds hand.
Variants at a glance
| Variant | Reference | Dial | Indices | Date | Seconds | Price from |
|---|---|---|---|---|---|---|
| 556 A | 556.014 | Matte black | Arabic + batons | Yes | White | 1,190 EUR |
| 556 I | 556.010 | Glossy black | Applied batons | Yes | White | 1,190 EUR |
| 556 I RS | 556.0106 | Glossy black | Applied batons | Yes | Red | 1,190 EUR |
| 556 I B | 556.0104 | Blue sunburst | Applied batons | No | White | 1,350 EUR |
Four limited editions also sit alongside the core line: 556 Sand, 556 Eisblau, 556 Malve, 556 Salbei (each from 1,450 EUR, see Sinn's configurator).
Shared specs
| Spec | Value |
|---|---|
| Diameter | 38.5 mm |
| Height | 11 mm |
| Lug width | 20 mm |
| Weight | 65 g (head only) |
| Case | Stainless steel, satinised |
| Crystal | Sapphire, AR-coated both sides |
| Caseback | Sapphire display back, AR-coated inner side |
| Water resistance | 20 bar (200 m), low-pressure resistant |
| Movement | Sellita SW200-1 automatic, 26 jewels, 4 Hz |
| Power reserve | ~38 hours |
| Crown | Screw-down |
| Antimagnetic | DIN 8309 |
| Lume | Hour and minute hands plus hour indices |
556 A
Reference 556.014. Matte black dial, Arabic numerals at 12-3-6-9 with baton indices between, date window at 3. The most overtly pilot-watch face of the line, easiest to read at a glance. From 1,190 EUR on leather, 1,540 EUR on the satin bracelet.
556 I
Reference 556.010. Glossy black dial, applied baton indices, date window at 3. The "I" stands for Indizes. Cleaner and dressier than the 556 A while keeping the date. From 1,190 EUR.
556 I RS
Reference 556.0106. Same dial as the 556 I but with a red seconds hand ("RS" for Rot-Sekunde). Small change, surprisingly different feel on the wrist. From 1,190 EUR.
556 I B
Reference 556.0104. Galvanic blue dial with sunburst (Sonnenschliff) finish, applied rhodinised diamond-cut baton indices, no date. The "B" stands for Blau. Shifts from deep navy to bright cobalt depending on the light. The only variant in the core line without a date. 1,350 EUR.
Context
The 556 sits below the 856 (40mm, Tegimented, soft-iron core) and the 836 (37mm pilot field watch). No proprietary Sinn technologies here, just a well-built everyday watch with a standout dial range. At 38.5mm and 11mm thick it wears smaller than most current tool watches, useful as a dress-sport crossover.
Compared to the 856 S UTC (40mm, Tegiment, magnetic shielding), the 556 is smaller, lighter, and dressier. The 20 bar water resistance and low-pressure rating are unusual at this price and size, the watch is genuinely usable in water rather than splash-proof only.
A previous 556 I S with mother-of-pearl dial has been discontinued.