Handheld wireless microphone system. It contains a QLXD2 handheld transmitter with SM86 microphone head and a QLXD4 receiver. Featuring an SM86 handheld wireless microphone transmitter, QLXD24E/SM58 combines professional features with simplified setup and operation. QLX-D delivers outstanding wireless functionality ideal for mid-size events and installations in businesses, hotels, and government offices with conferencing spaces; schools, houses of worship, and live performance spaces. Frequency: 470-534 MHz