  We report the discovery of a binary composed of two brown dwarfs, based on
the analysis of the microlensing event OGLE-2016-BLG-1469. Thanks to detection
of both finite-source and microlens-parallax effects, we are able to measure
both the masses $M_1\sim 0.05\ M_\odot$, $M_2\sim 0.01\ M_\odot$, and distance
$D_{\rm L} \sim 4.5$ kpc, as well as the projected separation $a_\perp \sim
0.33$ au. This is the third brown-dwarf binary detected using the microlensing
method, demonstrating the usefulness of microlensing in detecting field
brown-dwarf binaries with separations less than 1 au.
