Sinn Spezialuhren 903 St II

The Sinn 903 St II, reference 903.090, is a chronograph in a 41 mm steel case with a see-through back. The 14.5 mm thick case has polished and satinised surfaces, water resistant to 200 metres. Under sapphire crystal, the black electroplated dial has a sunburst finish and silver counters for small seconds and timing. A date display sits beside hand-attached hybrid ceramic luminous indices. Automatic calibre LJP L110 has a 60-hour power reserve and column-wheel construction. DSP Technology seals the directly operated rotating slide-rule bezel.