Musical Instrument & Vocal Microphones
Sennheiser XSW 2-ME3 B-Band Headset
Sennheiser XSW 2-ME3 B-Band Headset, True Diversity UHF Wireless System, With pocket transmitter and ME3-II condenser headset microphone with cardioid polar pattern, Frequency range: B-Band, 614 - 638 MHz, Receiver in metal housing, 24 MHz switching...
https://www.bizrate.co.uk/musicalinstrument_vocalmicrophones/sennheiser-xsw-2-me3-b-band-headset-oid7320479396.html