UHF wireless microphone series. 1,1 Master and 2 mic 2,transmitter distance: >80M 3,730~950MHz 4, Passed ISO, UHF wireless microphone series Frequency range730~950MHzShaking modeLocking and ... , professional microphones.1, 1 master, 2MIc.2, Transmitter distance: >80M3, 730~950MHz.4, Has been passed ISO, CE, CCC,Certificate etc... UHF wireless microphone series ...