R81 (B2.5Iab:e) of the LMC is the only known P Cygni type eclipsing binary. During our guarantied time with the new Fiber fed Extended Range Optical Spectrograph FEROS (spectral range 3700 Å - 9200 Å lambda/Delta_lambda=48000) at the ESO 1.5m telescope we obtained a spectroscopic time series covering the whole period of 74.55d with a S/N ~ 100 and a time resolution of typically one spectrum per night. Simultaneously we obtained the lightcurve of R81 at the Danish 0.5m telescope at with a total phase coverage of typically one measurement per night. Due to the large spectral coverage of FEROS a huge amount of strategic lines could be indentified which allow to trace the phase-locked photospheric, wind and envelope behaviour of R81. We present a first overview of the photometric and spectroscopic data. Several lines influenced differently by the wind are shown. Furthermore we present preliminary orbital parameters from our first analyses of the radial velocity curve.