... convenience, connecting to your MP3,MP4, CD, DVD, GPS, PSP, mobile phone, notebook computer, Hi-fi speaker, U-disk and TF ... by CE,ROHS. Parametersl Output: RMS 6W (3W+3W) THD=10%l Frequency response: 150-18000HZ(±3Db)l Signal and noise ... if it is so. More photos: mini portable speakers for mobile phones