Built-in Auxiliary Input Cable with Stereo Plug for Connecting Your Tablet, eReader, Smartphone, MP3 or other Digital Audio Player - 0.8' Well Holds Your Tablet, eReader, Smartphone, MP3 or Digital Audio Player in Either a Vertical or Horizontal Position when Playing - Volume Control - Output: 2 x 2 W RMS - Power: 120V AC Adaptor (Not included) or 4 x €˜AA (UM-3) Batteries (Not included)