  We provide a gauge-mediation model of dynamical supersymmetry breaking where
the gravitino mass takes a value in a wide range from 0.1 eV to 10 GeV. The
lower mass region of order 100 keV or less deserves experimental and
cosmological interests. The vacuum of our model is a true one without runaway
instability, which may be desirable in a cosmological evolution of the
universe.
