Shure’s GLX-D Wireless Systems combine Automatic Frequency Management, battery recharge-ability, pro-quality microphones and rugged construction. These systems offer seamless ease of operation and digital audio clarity for singers, musicians and presenters. Operating in the 2.4GHz frequency band, GLX-D Wireless offers the enhanced performance of LINKFREQ Automatic Frequency Management. GLX-D analyzes the RF spectrum, determines the best available frequencies and automatically deploys frequencies to the transmitter and receiver. Additionally, in the presence of RF interference, the GLX-D receiver and transmitter will seamlessly move together to clean frequencies with no audio signal interruption. Each GLX-D transmitter is powered by a custom, intelligent lithium-ion battery for up to 16 hours’ continuous use at full charge. The intelligent lithium-ion battery is good for up to 10,000 hours of use, or the equivalent of up to 2,500 AA batteries. For details, call 800.257.4873 or visit shure.com.