... . 1.for ipad console charger speaker 2.Use of digital audio amplifier, 2.0 channel high-power high tone quality output.3 ... .With a 3.5mm audio input interface, support for other external audio device (such as MP3, MP4, etc.)4 ... .Four functional electronic switch (audio on-off switch, audio input selection, volume +, volume -), easy to use.4 ...