  We study the properties of an impurity immersed in a weakly interacting Bose
gas, i.e., of a Bose polaron. In the perturbatively-tractable of limit weak
impurity-boson interactions many of its properties are known to depend only on
the scattering length. Here we demonstrate that for strong (unitary)
impurity-boson interactions all static quasiproperties of a Bose polaron in a
dilute Bose gas, such as its energy, its residue, its Tan's contact and the
number of bosons trapped nearby the impurity, depend on the impurity-boson
potential via a single parameter.
