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. 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 singlet with Dysonian contribution from which an intrinsic conductivity of the metal-like domains (ca. 4000 S/cm at room temperature) was determined. The conductivity was shown to decrease sufficiently as the sample is evacuated. PC and air molecules interact strongly below and weakly above the critical temperature T_c due to phase transition that leads to an extremal temperature dependence of the polymer linewidth. As the registration frequency increases from 9.7 GHz up to 140 GHz the T_c value is shifted from 160 K down to 130 K. The intrinsic conductivity of PANI does not correlate with its linewidth that evidences for the polaron localization inside crystalline domains. The charge is transferred according to the Mott variable range hopping mechanism.