GLXD2 Beta58A-Handheld Transmitter Features: Automatically links with GLX-D wireless receivers for seamless frequency changing and any necessary gain adjustment Up to 16 hours of continuous use with Shure proprietary lithium ion rechargeable batteries Multiple USB charging options Up to 200 feet (60m) transmission radius Lightweight and rugged construction (GLXD2) Two-color transmitter status indicator LED GLXD2 available with a variety of trusted Shure microphone capsules