Benefits: Exciting portable sound amplifierWireless, just place phone on unitPerfect for sharing musicBuilt-in 3.5mm audio in port for playing audio through a wire instead of using wireless technology (requires double ended 3.5mm plug not included)Great for conference calls, skype calls and projecting audio to a group of peopleRequires 3 AA batteries (Not Included) or plug into external DC power source using Micro USB socket (not included) Imprint Area: 2"W x 2"H (Top) 2"W x 1-1/8"H (Two Sides)