Shure QLXD2/SM58=-G50 Handheld Transmitter with SM58 MicrophoneFeaturing transparent 24 bit digital audio quality and incredibly efficient RF spectrum usage, the Shure QLXD2 Handheld Transmitter is ideal for wireless vocals in presentation spaces, music venues, and houses of worship. Easy to use, the QLXD2 quickly syncs with a wireless receiver over IR at the push of a button and maintains clear, uninterrupted signal over its entire 100 meter (330 feet) range. All metal construction ensures durability, and a wide