Features: Built-in English 2,300 Songs 22 Songs with Vocal assist ( Multiplex) Bonus Song Pack with 255 English Songs 2 Wireless Microphones (Tested Range Coverage: 50 Ft.) Complimentary 2G SD Card, preloaded with video files 6 Chip Slots for additional Song Upgrade USB Port for Recorded Songs Upload 9 Inter-changeable Thematic Backgrounds 7 New Games ( Singing Contest, Song Quiz, IQ200, Bingo 1, Bingo 2, Dart, Ten-Ten Capable of Video Playback through the SD Card Technical Specification: Echo, key, Tempo control - Yes Random Playback - Yes Recording/playback - Yes Display all duplicated song #s - Yes Reservation - Yes (100) Search Mode ( Artist, Song Title) - Yes Repeat (for practicing) - Yes Continuous play - Yes Cha...