Shure QLXD24/SM58 Handheld Wireless System with SM58 Vocal Microphone, G50 Includes SM58, QLXD4, microphone clip, power supply, 2 AA batteries, battery contact cover, two 1/2 wave antennas, 2 BNC cables, zipper bag, 2 BNC bulkhead adapters, rackmount kit, and user guide With an interchangeable SM58 microphone cartridge, the QLXD2/SM58 Handheld Wireless Microphone Transmitter is ideal for wireless vocals in presentation spaces, music venues, and houses of worship Half-rack QLXD4 Digital Wireless Receiver quickly finds open frequencies and deploys them to transmitters via the one-touch sync function Offers up to 9 hours of continuous use with 2 AA alkaline batteries (included) or up to 10 hours of continuous use with a Shure SB900 lithium-ion rechargeable battery (not included) Ethernet networking enables networked channel scanning and Wireless Workbench software integration for remote control of receiver settings from PC/Mac; remote monitoring and control from iOS devices also is available via the ShurePlus Channels Mobile App