The Mastercal calculator by Baptiste Lanne for Lexon presents itself extremely reduced. The specialty at the Mastercal: The display is completely introduced in the housing, so that the design appears completely without any fractures. Only the round keys come out of the silhouette, inclined harmonically upwards at the top. Ten digits are represented on the LC display of the Mastercal. The keys of the Lexon calculator are illuminated and appear bright, while the rest of the display remains dark. Lexon manufactures the Mastercal out of ABS and acrylic.