Zeitwinkel 181° Black

It shares its 42.5 mm, 11.7 mm steel case and sapphire crystal with the 032° and the 312°, the version of Zeitwinkel's 082° without central seconds. The 273° keeps the diameter in a 13.8 mm case and runs on the ZW0103, which Zeitwinkel developed for it, with a large date at 11 o'clock, a power-reserve indicator and small seconds; that movement stands 8.0 mm high against 5.7 mm for the ZW0102.

Like every Zeitwinkel, the 181° runs on one of the brand's own automatic movements with plates and bridges in untreated German silver. The base ZW0102 beats at 4 Hz, holds more than 72 hours of reserve and is built with central or small seconds and an optional date at 3 o'clock. The 181° also comes with blue and silver dials; the 082° Rhodium is the 39 mm alternative, at 11.6 mm thick.