Shure GLXD24/SM58

SM58 with GLXD2 Handheld Transmitter:

Integrated microphone capsule design, featuring trusted SM58
Automatically links with GLX-D wireless receivers for seamless frequency changing
Up to 16 hours of continuous, rechargeable use with Shure proprietary lithium-ion rechargeable batteries
Operating Range:
Indoors: Up to 100 feet (30 m) typical, with a maximum of 200 feet (60 m) under ideal conditions
Outdoors: Up to 65 feet (20 m) typical, with a maximum of 165 feet (50 m) under ideal conditions
Sophisticated design with durable, lightweight construction

GLXD4 Single Channel Receiver:

Hi-res LCD screen status display
Real-time battery run-time displayed in hours and minutes (accurate within +/- 15 minutes)
Remote adjustable transmitter gain control
Integrated battery charge port for proprietary Shure lithium-ion transmitter batteries, two-color charge indicator LED
Green: Charged
Flashing Green: 90% charged
Red: Charging
XLR and output connectors
Lightweight, durable construction