The OE319 from Califone is a lightweight over-ear microphone designed for use with the M319 beltpack, The mic clips snugly around your ear and has an extended boom arm to position the mic element near your mouth for clear vocal pickup, The mic has a standard 3, 5mm plug for connection to the beltpack, Lightweight around-ear design for hands-free use, Extended boom for clear vocal pickup, Standard 3, 5mm connector, SKU: CAFI326