  We study the properties of the faint X-ray activity of Galactic transient
black hole candidate XTE~J1908+094 during its 2019 outburst. Here, we report
the results of detailed spectral and temporal analysis during this outburst
using observations from {\it Nuclear Spectroscopic Telescope Array (NuSTAR)}.
We have not observed any quasi-periodic-oscillations (QPOs) in the power
density spectrum (PDS). The spectral study suggests that the source remained in
the softer (more precisely in soft-intermediate) spectral state during this
short period of the X-ray activity. We notice a faint but broad Fe K$\alpha$
emission line at around 6.5 keV. We also estimate the probable mass of the
black hole to be $6.5^{+0.5}_{-0.7}~M_\odot$ with 90\% confidence.
