- VHF Portable Transmitter & Receiver - ATR35 Miniature Lavalier - ATR20 Dynamic Handheld Microphone - 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 - Durable, rubber-coated, flexible receiver antenna can be positioned for best reception - Includes belt-clip and quick, reliable camera mount adapter for easy positioning and use The ATR288W VHF TwinMic System from Audio-Technica is a portable, wireless microphone system that is ideal for video camcorders, karaoke, presentations, and fitness instruction. The system includes a camera-mountable VHF receiver, bodypack transmitter, and two microphones: an omnidirectional condenser lavalier microphone and a unidirectional dynamic handheld microphone.