AKG WMS 470 Wireless Instrument Set has an automatic frequency setup function that immediately finds and displays all available channels. WMS470 by AKG operates up to 16 channels simultaneously within the same frequency band and up to 48 channels by using multiple frequency bands. AKG WMS 470 wireless system includes an AKG PT470 transmitter, AKG SR470 receiver and an MKG L instrument cable. WMS470 instrument set incorporates handheld, headworn and lavalier mic options.