The PSM 300 Twin-Pack Pro Wireless In-Ear Monitor Kit from Shure includes a Shure P3T wireless transmitter, 3 P3RA wireless bodypack receivers, and two Shure SE215 (clear) sound-isolating earphones. Other accessories include a 1/4 wave antenna, a BNC bulkhead adapter and cable, a power supply, four AA batteries, six pairs of flex sleeves (S, M, L), two drawstring pouches, and two zipper bags for the receivers. This kit can be used to deliver 24-bit digital audio