As the name might already reveal we created a regulator with a double retrograde second. The operation of the retrograde seconds takes place in two merging periods. When the starting second is over after 30 seconds the other second hand automatically runs from the thirtieth to the sixtieth second. When the sixtieth second is reached the procedure begins anew. It is a real pleasure to watch the passing of the time in this special form. The Retrolateur can be ordered in two different crafted versions. By order we craft the Sw07 with the Schaumburger 3/4 bridge or with engraved plates.