  We present preliminary results on modelling KIC 7693833, the so far most
metal-poor red-giant star observed by {\it Kepler}. From time series spanning
several months, global oscillation parameters and individual frequencies were
obtained and compared to theoretical calculations. Evolution models are
calculated taking into account spectroscopic and asteroseismic constraints. The
oscillation frequencies of the models were computed and compared to the {\it
Kepler} data. In the range of mass computed, there is no preferred model,
giving an uncertainty of about 30 K in $T_eff$, 0.02 dex in $\log g$, $0.7
\,R_\odot$ in radius and of about 2.5 Gyr in age.
