  Gravitational field of an electron, fixed by experimental values of its mass,
spin, charge and magnetic moment, is given by the metric of Kerr-Newman (KN)
solution. Unexpectedly, this metric contains a singular ring of the Compton
radius, which should be regulated resulting in a weeak and smooth source. The
consistent source takes the form of an oblate vacuum bubble, bounded by a
closed string of the Compton radius. The bubble turns out to be
relativistically rotating and should be filled by a coherently oscillating
Higgs field in a false vacuum state.
