Sinn Spezialuhren 103 St Sa

The Sinn 103 St Sa, reference 103.061, is a chronograph in a polished steel case measuring 41 mm in diameter. The case is 17 mm thick, water resistant to 200 metres and fitted with a see-through back. Calibre Concepto C99001 has automatic winding. High-domed sapphire crystal fronts a matte black dial with small seconds and luminous numerals. The calendar gives both day and date. A captive rotating pilot's bezel has minute ratcheting and a luminous key mark.