This GMS-274 is designed to add a power switch to a dynamic microphone. It is ideal for karaoke, public speaking, and other events during which a single microphone is shared. List price: $44.95Price: $28.95 Quantity * SKU: Hosa GMS-274Catalog: ConnectorsBrand: Hosa CablesDimensions: 7 in × 3 in × 2 inWeight: 1 lb