Case 37mm of diameter in white gold. Dial in silver plated, rhodium gold needles. Black bracelet in croco with loop Lange tongue in white gold. Mechanical movement with manual reassembly, gauges L941.1 de Lange, 21600 alternations per hour, reserve of 45 hours walk, circular Côtes completion of Geneva, platinizes beaded, anglés bridges and drawn bars, turned blue screws.

Functions hour, minute and small second with stop second.