Shure QLXD1 Body Pack

The QLXD1 Wireless Bodypack Transmitter is ideal for wireless vocals and instruments.
Bande G51 (470 - 534 MHz)
24-bit digital audio.
Over 120 dB of dynamic range
Radio Frequency Range 20 Hz–20 kHz
Selectable display mode showing group/channel, frequency, or battery runtime.
Battery Requirements: 2 AA alkaline batteries or SB900A Lithium-Ion Rechargeable Battery