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add to cartProduct Specifications 1 : One to four infrared frequency Microphone : 2 : Frequency range : 520MHz-960MHz 3 : Frequency Response : 50Hz-15KHz 4 : Maximum input sound pressure : 130db SPL 5 : Microphone pickup : Capacitive 6 : Operating current : 110Ma 7 : Up to six sets use a drag four systems 8 : super circuit design, anti- interference of mobile phones and other reasons |