The Perception PT 45 Wireless Pocket Transmitter from AKG is a UHF wireless bodypack transmitter that is designed to be used with the Perception SR 45 receiver and is compatible with the AKG MicroMic series. Designed for versatility when interference is present, the PT 45 has 8 selectable frequency bands. Additionally, electric guitars, electric basses and keyboards may be connected to the PT 45 with the optional MKG L guitar cable, also from AKG.