With its Wyzer Wall Clock, Leff breaks the mold of traditional wall clocks by creating prominent hour and minute hands and eliminating a standard clock face. Lacking a frame and numbers altogether, the Wyzer clock instead utilizes the wall on which it is mounted as its background, which can create a small clock when centered between other wall hangings or windows, or a large, expansive clock when placed on an empty, uninterrupted wall.  Modern Wall Clocks by Marianne Colahan