Single-channel VHF wireless microphone/instrument system, handheld transmitter. High-band VHF (170 to 216MHz) operation for interference-free performance. Advanced companding circuitry for a wide dynamic range (no overloading for loud inputs or background hiss during quiet use). Full frequency response from 40 to 20,000Hz. 250ft typical operating range, up to 500+ft line-of-sight. DKW-1 mini portable receiver with unique space-saving, vertical design and power on/off switch, 1/4-inch audio output jack, easily visible extra-large LED indicators for power on, transmitter on and audio peak. Operates on a separate single frequency in the VHF 170 to 216MHz band. Unidirectional neodymium dynamic cartridge for optimum true sound, maximum feedback rejection and minimal handling noise. Off/standby/on switch allows convenient audio muting with the transmitter on. Low-battery LED indicator flashes once for unit on, lights steady for low-battery alert. Uses one 9V alkaline battery for 15+ hours operation. Choice of instrument, Headmic™ or lapel microphone bodypack transmitter for use with LM-14O omnidirectional or LM-14U unidirectional lapel microphones or Headmic™ series microphones. Low-battery LED indicator. Locking 3.5mm mini-jack provides secure connection for removable microphone or instrument cable. Easily accessible input level adjust for optimum sound.