Petite Lange 1 “Soirée”

Reference: 813.044B, Lange movement: Calibre L901.4, manually wound. Time indicated in hours, minutes, small seconds with stop seconds, patented outsize date, power-reserve indicator. Crown for winding the watch and setting the time, recessed push-piece for switching the outsize date. Twin mainspring barrel, power-reserve more than 72 hours when fully wound. Plates and bridges made of untreated German silver; balance cock engraved by hand. Three-part 18-carat white gold case with anti-reflection-coated sapphire-crystal glass and caseback, diameter 36,1 mm. Aquamarine ray leather strap with precious Lange prong buckle in white gold. Dial made of solid gold, white tint, faced with mother of pearl; set with 63 brilliant-cut diamonds.