  We present a detailed study of single crystalline K$_{2}$Cr$_{3}$As$_{3}$ and
analyze its thermodynamic and transport properties, anisotropic $H_{c2}(T)$,
and initial pressure-dependence of $T_{c}$. In zero-field, the
temperature-dependent resistivity is metallic. Deviation from a linear
temperature-dependence is evident below 100 K and a $T^{3}$-dependence is
roughly followed from just above $T_{c}$ ($\sim$10 K) to $\sim$ 40 K.
Anisotropic $H_{c2}(T)$ data were measured up to 140 kOe with field applied
along and perpendicular to the rod-like crystals. For the applied field
perpendicular to the rod, $H_{c2}(T)$ is linear with a slope $\sim$-70 kOe/K.
For field applied along the rod, the slope is about -120 kOe/K below 70 kOe.
Above 70 kOe, the magnitude of the slope decreases to $\sim$-70 kOe/K. The
electronic specific heat coefficient, $\gamma$, just above $T_{c}$, is 73
mJ/mol K$^{2}$; the Debye temperature, $\Theta_{D}$, is 220 K. The specific
heat jump at the superconducting transition $\Delta$C $\sim$ 2.2 $\gamma
T_{c}$. Finally, for hydrostatic pressures up to $\sim$7 kbar, $T_{c}$
decreases under pressure linearly at a rate of -0.034 K/kbar.
