Handheld wireless system that includes GLXD4 receiver, GLX2/BETA87A handheld transmitter, microphone clip, power supply, rechargeable battery, USB cable, carrying case, and user guide. Single-channel wireless receiver features revolutionary LINKFREQ Automatic Frequency Management (2.4 GHz frequency band) and battery rechargeability – an integrated battery charge port can charge a spare Shure lithium-ion battery while the system is in use. It allows operation of up to 4 compatible systems in a typical setting, and up to 8 maximum under ideal conditions. Receiver features a high-resolution LCD screen status display with real-time transmitter battery status displayed in hours and minutes (accurate within +/- 15 minutes), a remote adjustable transmitter gain control, a two-colour charge indicator LED (Green – Charged, Flashing Green - 90% charged, Red – Charging), XLR and 1/4" output connectors and a lightweight, durable construction. Handheld transmitter features an integrated BETA87A cartridge and transmits wireless audio with digital clarity and rock-solid reliability. It automatically links with wireless receiver for seamless frequency changing and offers up to 16 hours of continuous battery life with Shure lithium-ion rechargeable batteries (included). Microphone clip, USB charge cable, and user guide are also included. Frequency: 2,4 GHz