With a hidden CD+G player and a USB port for downloaded MP3+Gs, this Singing Machine Mobile Karaoke System lets you sing along to your favorite tunes. Unleash the power of your Singing Machine and enjoy the fun of singing karaoke when you download the free Singing Machine Mobile Karaoke App for iPad, iPhone and iPod touch (devices sold separately) and enjoy a selection of free, full-length songs, or wirelessly stream music from bluetooth-compatible devices running the iOS, Android or Windows operating systems. Resting tablet cradle. USB port for digital MP3 + G. Two microphone jacks let two vocalists perform at once (one microphone included; additional microphones sold separately). Built-in speaker provides powerful sound. Line-in input connects to other audio devices (sold separately). Echo, balance, and auto voice control so you can sound your best. RCA output jacks connect to your TV to scroll the lyrics.