The Shure PG2/PG58 Wireless Handheld Transmitter is comprised of the PG2 transmitter fitted with the rugged PG 58 microphone cartridge. The Shure PG2 transmitter features a power, mute and battery status LED, power and mute switch, and has an operating range of 250 ft. It operates on a 9V battery. The Shure PG58 dynamic cardioid microphone cartridge is tuned to accentuate the clarity of lead and back-up vocals. It has a frequency response of 60 to 15,000Hz and can handle extreme volume levels without distorting. Shure professional audio products deliver legendary sound quality, stage-proven durability and hassle-free setup for worry-free performance.