The wharfedale pro usx800 is a versatile, simple to use and very dependable wireless microphone system. The usx800 incorporates a dual antenna uhf receiver with two identical tuners for the most reliable reception, and virtually no dropouts or unstable performance. The handheld transmitter comes in the form of a premium dynamic microphone, for a crystal clear vocal pick-up, ideal for singers, performers and speech. The innovative auto frequency scan function enables the system to automatically scan the uhf frequency band and select the strongest signals from the microphone's transmitter. Then, by simply pressing the sync button on the receiver, the user can automatically lock any of 50 available uhf frequencies between the transmitter and receiver for a true 'one touch' frequency adjust. An infrared transmission link also feeds data to the hand-held transmitter providing up-to-date status of the signal strength, battery condition and selected transmission parameters with all information displayed on the colour lcd screen, you are always in firm control of your wireless performance.