Light synchoronized Audio concept 2000
Worldwide CD Cassette player 1998
concepptual CD Player 1994
Dual CD Cassette 1995
Portable player 1997
Craddle Speaker 1996
Karaoke Remote controller & ID Checker 1998
Headphone concept 1998
Headphone type MP3 player 2001
MP3 player 2001
DVD player & Decoder 2001
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Sound Device