Una system is provided with a small joint that allows a 360° rotation on two axis and a 180°rotation on the third one ensuring a total freedom of movement to the two arms and heads that una connects mechanically and electrically. two thin arms in aluminium with a printed circuit only 3 mm thick allow the user to make up diverse versions. in different sequences, various lengths and connecting terminals can be combined, thus creating desk, reading, wall. The lamp can hold different positions and orientations ensuring therefore precise modulation of the light. the intensity and spread of the area illuminated are determined by the different positions held by the arm on one joint only. this articulated dynamics is possible because the structure is extremely light due to the circuits that feed the leDs. Consequently, the shape is that of a very flat iconic profile whose aesthetics arises from technical, constructive, electrical and structural features. that is why una is a basic but highly technological product. this differentiation of functions and performances results from uncomplicated technological competence and specificity. this system is created by the combination of a few simply shaped elements that are produced easily and made of one material only.