REVOLUTIONARY SHURE GLX-D® DIGITAL WIRELESS SYSTEMS COMBINE LEADING-EDGE LINKFREQ AUTOMATIC FREQUENCY MANAGEMENT TECHNOLOGY WITH BEST-IN-CLASS INTELLIGENT LITHIUM-ION BATTERY RECHARGEABILITY TO DEFINE THE NEW STANDARD FOR SEAMLESS OPERATION AND DIGITAL AUDIO CLARITY. INCLUDES GLXD4 RECEIVER, GLX2/SM58 HANDHELD TRANSMITTER, MICROPHONE CLIP, POWER SUPPLY, RECHARGEABLE BATTERY, USB CABLE, CARRYING CASE, AND USER GUIDE.