... New Product Amplifier Speaker For Iphone 5,Iphone 4s & Samsung S3,S2,Galaxy Note 1.INTRODUCTIONThe speaker uses ... AA batteries or external DC in from the Micro USB socket.When the batteries are first inserted, the speaker will ... .5.4 External DC 5V in:The micro USB socket is fro external power of DC 5V.When the ... New Product Amplifier Speaker For Iphone 5,Iphone 4s & Samsung S3,S2,Galaxy Note