Material: ABS
USB/SD card speaker
Compatible with PC, Mac, and MP3/MP4/CD/DVD players
Supports PC or notebook computer
portable, no extra battery operated stereo audio system
With LED display
Can be used with any portable audio devices by the stereo jack output
Input:5.0V
Output:3.7V*1000MA
Built-in rechargeable Li-ion Battery
Customized colors and logos are welcomed
Ideal for promotional purposes
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