  We present an analysis of the 2-150 keV spectrum of the transient X-ray
pulsar V0332+53 taken with the Rossi X-Ray Timing Explorer (RXTE) in 2004
December. We report on the detection of three cyclotron resonance features at
27, 51, and 74 keV in the phase-averaged data, corresponding to a polar
magnetic field of 2.7 x 10^12 G. After 4U0115+63, this makes V0332+53 the
second accreting neutron star in which more than two cyclotron lines have been
detected; this has now also been confirmed by INTEGRAL. Pulse-phase
spectroscopy reveals remarkably little variability of the cyclotron line
through the 4.4 s X-ray pulse.
