Model: MK-4 MK4&401 All-in-one sing along video karaoke magic microphone jukebox with built-in 1,000 english songs. 1)Built-in 1,000 English songs 2)You can Download the songs by USB, Can update the boot-strapt menu. with moving background picture up to 20 minutes, music and lyrics on a TV screen 3)No karaoke player, laser disc, DVD, VCD needed 4) Can select your favourite songs add to your list and gives score after each song 5)NTSC/PAL video output 6)Can adjust the key, tempo, echo and more 7)The perfect party companion or the perfect gift 8) Hold up to larger songs in it, it have three slots in the machine and plug three songchips at the same time(about 5500 songs), 9)You can also purchase song chips for the following languages: Japanese English Spanish Korean Chinese Filipino Brazilian Thai Indonesian Vietnamese with more to come 10)It also works in a wireless mode, so that people do not have to worry about tripping on wires while singing and dancing 11)Basic units includes: magic mic, free songbook, RCA cable, A/C adapter, leather carrying case