Countryman E2CABLELSR

The E2 Earset redefines pure sound in a virtually invisible package, and is easier to use than even a lavalier or podium microphone. Like the classic E6 Earset, the E2 rests over the ear, but has a much shorter boom, with a uni-directional element that provides nearly the isolation of an E6 Omni at the mouth, but with significantly less visibility.
 

Unlike earsets that are hard-wired from the mic to the connector, Country Man cables quickly and securely snap into the E2 Earset to link the mic to hardwired or wireless systems.

3,5mm for Sennheiser Evolution