  We introduce an $SU(2)_X^{}$ dark sector without any fermions and then
realize a non-abelian kinetic mixing between the dark $SU(2)_X^{}$ gauge fields
and the standard model $SU(2)_L^{}\times U(1)_Y^{}$ gauge fields. While one of
the dark gauge bosons becomes a dark photon, the others can keep stable to form
a dark matter particle. The nearly degenerate masses of dark photon and dark
matter could be tested if the dark photon and the dark matter are both observed
in the future.
