With an interchangeable BETA87C microphone cartridge, the QLXD2/BETA87C 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.