The magnetic, relaxation and electronic dynamic parameters of paramagnetic centers (PC) in crystalline domains of polyaniline (PANI) being in the metallic state ("organic metal") were studied at 3-cm (9.7 GHz) and 2-mm (140 GHz) wavebands EPR at wide temperature region. The sample studied was a polymer blend containing 36% of PANI and PMMA. Spin-spin and spin-lattice relaxation times of these PC were obtained by the steady-state saturation method. At all wavebands EPR the PC in PANI demonstrate Lorentzian single line with Dysonian contribution taking a possibility to determine an intrinsic conductivity of the metal-like domains (ca. 4000-7000 S/cm at room temperature) in PANI. The conductivity was shown to de crease sufficiently as the sample is evacuated and/or is deposited on a glass surface. Phase transition in PANI was registered at T= 160 K. PC and air (water and/or oxygen) interact strongly below and weakly above the critical temperature that leads to an extremal temperature dependence of the polymer linewidth. The latter value de pends weakly on the EPR registration frequency that is evidence of strong spin-spin interaction in the polyaniline sample studied.