  The paper, classically, presents a special stable non-topological solitary
wave packet solution in $3+1$ dimensions for an extended complex non-linear
Klein-Gordon (CNKG) field system. The rest energy of this special solution is
minimum among other (close) solutions i.e. it is a soliton solution. The
equation of motion and other properties for this special stable solution are
reduced to the same original known CNKG system.
