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Luckyglory Technologies Ltd can supply many kinds of speaker.

Feature:

Suitable for all audio players with a USB connection port, such as laptop, CD player, DVD player, PC etc...
Built-in amplifier
Designed with a headphone jack for you to enjoy music
LED power indication
Volume adjustable

USB powered
Frequency response: 100- 20000Hz
Impedance:4 ohms
3.5mm audio jack

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