... Mic Ideal for:DJs, KJs, Hubs,Home entertainment, Karaoke enthusiasts, Schools, and ChurchesSing-A-Song Recording: Recording your own music video ... the USB disk is, the longer recording time are)Professional Karaoke Features and DVD Features * USB & 3-in-one (SD, MMC ... 500 lines of Horizontal Resolution* Professional Karaoke function with 12 step Key Control and 12 Step Tempo Control* 13step output ...