Easy to use --- Clamp the microphone directly on the mouth of the saxophone plug the receiver into the MIC interface of the speaker and then turn it on and use it. UHF 600-952MHz frequency range (region dependant).
JOYO JW-03 2.4GHz Guitar Wireless System Transmitter Receiver
TONOR UHF Metal Wireless Microphone Cordless Handheld Mic System Receiver