LEDs on transmitter and receiver to confirm system status. Earphone included to monitor sound that is being recorded. Receiver plugs into camera's external microphone jack. Both units use one 9V battery each. Includes WR-PRO receiver, WM-PRO belt-pack transmitter, and lavaliere electret condenser microphone. A Complete System Which Includes The Wl/t-pro A Belt-pack Transmitter (wm-pro) With Electret Condenser Lavalier Microphone (ex-503) And The Wr-pro Receiver Which Comes With Both Shoe-mount And Hook And Loop Fastener. All Receivers And Transmitters In The "pro" Series Are On The Same 2 Frequencies (169.445mhz And 170.245mhz).
Customer Video Review Length:: 2:54 MinsMono sound but I am impressed with the quality and range. The included video demonstrates the potential to broadcast, (from a fixed/non-moving position,) up to 300 feet. I personally would limit a wired, moving person to 50 feet. The microphone cord acts as an antenna and any movement beyond 50 feet can cause interference.This is a good alternative to the $500 you would spend on a more professional stereo system.I purchas..