The SW245B Dual Audio Pal system packs incredible power into a light unit, reaching an audience size of 300 people with crystal-clear sound. Built-in VHF wireless microphone system featuring two-person simultaneous usage. One person can be using the wireless handheld microphone while another uses the headset or lapel microphone. It comes loaded with a media player that gives you the ability to play recorded audio from a SD card or a USB thumb drive and includes FM radio. You can even record a presenter's speech that is spoken into the microphone onto the thumb drive.