556.0103Ref

To mark our 55th anniversary, Sinn released the 556 Anniversary, a 1,000-piece limited edition featuring a satinized stainless steel case and an anthracite sunburst dial. The dial commemorates the 1961–2016 timeframe, while the rotor is engraved to signify its limited status, visible through the sapphire crystal case back. This watch maintains high readability, low-pressure resistance, and water resistance up to 20 bar.