Single crystal EPR and powder EPR of sulphto bridged Cu(II) complex were studied at X-band frequency. EPR of powder samples exhibit a single exchange narrowed resonance at 300 K and an orthorhombic spectrum at 77 K. Single crystal spectra show a single exchange - collapsed resonance line for all the orientations indicating the complex to be in the strong exchange regime. The magnitude of intrachain exchange coupling constant, J=0.1154(4) cm -1 , calculated from the angular variation of the line width clearly reveals strong coupling between the magnetic Cu(II) centers. The ratio of interchain/intrachain = 3.5 x 10 -2 and