Shure PGX1- Wireless Bodypack Transmitter Shure PGX1- Description : Shure's PGX1 can be used with headworn, lavalier, or instrument microphones, or with guitars or basses. Shure PGX1- Features : Automatic Transmitter Setup Multi-function LED Indicator ((power, lockout, mute, low battery) -10db pad 2 AA batteries provide 8 hours of continuous use 18 MHz operating range Get Your Shure PGX1- Today !