... with mp3,mp4,mobile phone and computer This USB speaker is external, has great quality with a rechargeable lithium battery. ... " x 2 1/8" Imprint Methodssilk screen Product OptionsPromotional Gifts, Corporate Gifts PersonalizationYes Rush Service Yes OEM AcceptedYesLogoCustomized logo Samples TimeA ... /A,PAYPAL,WESTERN UNION,MONEY GRAM Mini audio box Car Speaker Music USB Micro SD/TF Card portable ...