... of digital audio amplifier, 2.0 channel high-power high tone quality output.With a 3.5mm ... Ipad transverse and vertical, allowing you to watch the video.With 1pc USB interface, can connect USB cable for ... MP3; MP4; Bluetooth headsets, mobile phones.Accessories: 1pc USB to DC charging cable 1pc 3.5mm audio adapter cable ... grip Best Outdoor Wireless Bluetooth speaker with USB and battery power supply