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1 Power supply: USB power supply, AC/DC supply, DC/DC supply
2 Can connect MP3,MP4,DVD,CD,PC/MAC music player
3 Easy to take
4 Resistance: 4
5 Our put: 3.5mm connector, USB
6 Frequency: 100Hz-20KHz
7 Power: D/C adaptor( 5# battery *4)
