  The latest measurements of the masses and lifetimes of weakly decaying
$B$~hadrons from experiments at $e^+e^-$ and $p\bar{p}$ colliders are
presented. These measurements include the lifetimes of the $\bar{B}^0$,
$\bar{B}^0_s$, $B^-$, and $b$~baryons, as well as searches for the $B_c$~meson.
The observation of $B^*$, p-wave B~mesons ($B^{**}$), and excited $b$~baryons
using inclusive and exclusive $B$~hadron reconstruction are discussed. Results
on $b$~quark flavour tagging are given. The latest measurements of the masses
and lifetimes of weakly decaying $B$~hadrons from experiments at $e^+e^-$ and
$p\bar{p}$ colliders are presented. These measurements include the lifetimes of
the $\bar{B}^0$, $\bar{B}^0_s$, $B^-$, and $b$~baryons, as well as searches for
the $B_c$~meson. The observation of $B^*$, p-wave B~mesons ($B^{**}$), and
excited $b$~baryons using inclusive and exclusive $B$~hadron reconstruction are
discussed. Results on $b$~quark flavour tagging are given.
