The Shure FP15-L4 FP Wireless Bodypack System (L4 / 638 - 662MHz) features the FP5 portable diversity receiver and FP1 bodypack transmitter. The FP5 receiver features diversity reception, easy one-touch channel search and lightweight plastic housing. Infrared sync provides quick and easy channel syncing between the FP5 receiver and FP1 bodypack. The FP1 bodypack is lightweight and features a TA4 (4-pin) input connection for compatible Shure lavalier microphones. An input gain control is featured for flexible input level adjustment. The FP5 receiver and FP1 bodypack is ruggedly built and powered on a pair of AA batteries.