... 3.Good quality & Factory price 4.ROHS Approval 2012 New Product Amplifier Speaker For Iphone 5,Iphone 4s & Samsung S3,S2,Galaxy ... . When using Alkaline batteries, the speaker can stay in Standby mode for over 6 months.When the speaker is in Power On mode ... in, the AA batteries will not be used. 2012 New Product Amplifier Speaker For Iphone 5,Iphone 4s & Samsung S3,S2,Galaxy ...