Neutral K-meson system is analyzed in the framework of SU(2) (isospin: τ)×SU(2) (hypercharge spin: ζ) symmetry. Four neutral K-mesons exist and among them there is a longlived CP-even state which can decay into the 2π or the π0 e+e− state. The branching ratio of the latter mode is expected to be much larger than in the standard model.