Longines Watch DolceVita X YVY Ladies L5.512.4.79.2. The Longines DolceVita redefined by its double leather straps. The watch brand with the winged hourglass has revisited the models in its famous rectangular collection and created the new Longines DolceVita X YVY line. Its leather straps are the creation of Swiss designer Yvonne Reichmuth, founder of the company YVY.