Shure SLXD2/SM58 Handheld Transmitter with SM58 Vocal Mic Capsule - for use with SLX-D Digital Wireless Microphone Systems, Receiver Sold Separately | H55 Band (SLXD2/SM58=-H55)SLXD2 handheld transmitter with the legendary SM58 cardioid dynamic microphone capsule. Use with SLX D Digital Wireless receivers for transparent, 24 bit digital audio and rock solid RF performance in a wide range of applications from day long presentations to nighttime performances. Easy to use with rugged metal construction and an OLED display for clear readability. 8 hour run time from 2AA batteries or optional Lithium Ion rechargeability