Use of digital audio amplifier, 2.0 channel high-power high tone quality output. With a 3.5mm audio input interface, support for other external audio device (such as MP3, MP4, etc.) Four functional electronic switch (audio on-off switch, audio input selection, volume +, volume -), easy to use. User could place Ipad transverse and vertical, allowing you to watch the video. With 1pc usb interface, can connect USB cable for charging all kinds of devices, such as: iPhone; iPod; MP3; MP4; Bluetooth headsets, mobile phones. package: QTY:10PCS/CTN N.W:7.2KGS G.W:8.18KGS MEAS:33*32.5*35CM

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