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. It works with QLX-D Digital Wireless Systems and offers up to 9 hours of continuous use with 2 AA alkaline batteries (included) or up to 10 hours of continuous use with Shure lithium-ion rechargeable batteries. It comes with a battery contact cover, microphone clip, and user guide.