  We describe the spectra and decays of pi pi and pi K atoms within a
non-relativistic effective field theory. The evaluations of the energy shifts
and widths are performed at next-to-leading order in isospin symmetry breaking.
We provide general formulae for all S-states, and discuss the states with
angular momentum one in some detail. The prediction for the lifetime of the pi
K atom in its ground-state yields tau = (3.7 \pm 0.4) * 10^{-15} sec.
