Shure GLXD24R/B87A-Z2 Rechargeable Wireless System with BETA87A Vocal Microphone

GLX-D Advanced Digital Wireless Features Intelligent Rechargeability: Proprietary Lithium-ion rechargeable batteries with accurate battery metering for up to 16 hours of use when fully charged.
Automatic Frequency Management: Linked GLX-D Advanced wireless receiver communities easily identify and continuously move away from interference, finding the clearest channels for all systems.
Rack-Mountable for Multi-System Efficiency: Included mounting hardware and detachable antennas make it easy to install multiple GLXD4R rack mount receiver systems
Exceptional Digital Audio Clarity: The clearest sound from world-renowned Shure microphones with proprietary Shure digital wireless technology.
Rock-Solid RF Performance for Multiple System Installations: GLX-D Frequency Managers provide improved RF performance, antenna distribution and seamless frequency management for up to 9 GLX-D Advanced rack mount systems in typical environments (11 under optimal conditions).
Ideal for installations at small to medium houses of worship, schools and music venues. Ideal Applications: Live Vocals, Guitar / Bass, Presentation and Instrument.
Full Accessory Suite for Remote Antenna Management: Frequency managers, directional antennas, antenna splitters and remote mounting accessories are available to maximize system performance in various environments.