  We present detailed thermodynamic and transport measurements on single
crystals of the recently discovered binary intermetallic superconductor, SrSn4.
We find this material to be a slightly anisotropic three-dimensional,
strongly-coupled, possibly multi-band, superconductor. Hydrostatic pressure
causes a decrease in the superconducting transition temperature at the rate of
-0.068 K/kbar. Band structure calculations are consistent with experimental
data on Sommerfeld coefficient and upper superconducting critical field
anisotropy and suggest complex, multi-sheet Fermi surface formed by four bands.
