Product Detail SLX4: Automatic Frequency Selection and Transmitter Setup SLX4: 960 Selectable frequencies across 24 MHz bandwidth SLX1: Frequency and power lockout SLX1: 518 - 782 MHz operating range WA302: Instrument cable connects the T1, UT1, SC1, PG1, PGX1, SLX1, LX1, ULX1, UC1, UR1 and U1 body-pack transmitter to a guitar or other instrument . The "Shure SLX14 Instrument Wireless System, L4" is best product for you. We recommended Shure SLX14 Instrument Wireless System, L4