Shure GLXD2+/B58=-Z4

Shure Dual-Band Digital Wireless Handheld Transmitter with B58 Vocal Microphone

Featuring the industry-standard Shure BETA 58A vocal microphone, the GLXD2+/B58 handheld transmitter delivers superior digital wireless audio for GLXD+ Series receivers.
The seamless combination of automatic frequency management and new dual-band technology ensures reliable, consistent performance, while Shure's proprietary lithium-ion rechargeable batteries provide up to 12 hours of use.