VocoPro Professional PLL Wireless in-Ear Monitor Package with Stationary Transmitter and Receiver (SILENTPA ONE) Includes: Silent-PA-ST & Silent-PA-RX & IE-9 Operates in 900Mhz Band, Free of TV Station Interference Utilizes UHF Technology for Greater Reliability and Operating Range than VHF or 2.4Ghz Body pack Receiver Has Two Dedicated Audio Outputs Stationary Transmitter Equipped with Mixing Function to Combine Microphone And Music Signals Body pack Receiver Powered by two (2x) AA, Alkaline OR rechargeable, Batteries Internal Recharge Circuit Allows Simultaneous Operation and Charging of Rechargeable Batteries on both Body pack Transmitter & Receiver (Rechargeable Batteries and USB Charge cable not included)