a lighting device comprising a base part with a first magnetic material , and a second part is disclosed . the second part comprises a light source , and a nonmagnetic shell defining an essentially closed cavity , the light source and the nonmagnetic shell being in a fixed positional relationship , wherein the essentially closed cavity encloses a second magnetic material displaceable therein . this provides a lighting device in which the user may readily position the light source with a large degree of freedom .