Audio-Technica ATR288W TwinMic VHF Battery-Powered Wireless Microphone System Includes miniature lavalier condenser microphone for "hands-free" uses such as aerobics, dance, theater, lectures and "newscaster-style" videos Includes ATR1200 dynamic microphone for handheld uses such as singing, talking, recording and videos Compact, ultra-lightweight transmitter and receiver are each powered by a single 9V battery Normal operating range 100'; up to 300' under optimum conditions Two user-switchable frequencies for interference-free operation Includes earphone for real-time monitoring capability, belt-clip and quick, reliable camera mount adapter for easy positioning and use Durable, rubber-coated, flexible receiver antenna can be positioned for best reception