The PSM 300 Twin-Pack Wireless In-Ear Monitor Kit from Shure includes a Shure P3T wireless transmitter, two P3R-J13 wireless bodypack receivers, and two Shure SE112 (gray) 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, and it provides performers with a wireless monitoring option in applications for live concerts, theater, rehearsals, houses of worship, and more.