The EMW-1 is a melee weapon in Just Cause Unity.
The EMW-1 is a wrist-mounted blade that Rico has from the start of the game. This is used as a more effective melee attack than the Grappling Hook.
As Just Cause Unity has improved melee, this weapon is the easiest to obtain melee weapon in the game. It can be used in conjunction with the Grappling Hook to great effect.