RadioShack Wireless Lapel Microphone System 32-1257 This wireless microphone clips to your clothing and is ideal for meetings and presentations. Includes receiver, transmitter and microphone with lapel clip. Single-channel wireless microphone system for easy operation. 200-ft. operational range allows you to use in front of a large audience Microphone clips to clothing, leaving your hands free Built-in compander noise reduction allows audience to clearly hear what you are saying You'll also need: 9V, 200mA AC Adapter for Receiver (included) AA batteries (2) for Transmitter (not included)