... Speaker bag 1,Rohs,CE,SGS 2,mini,waterproof,good sound, 3,can be used in ... portable loudspeaker, waterproof speaker bag2),Function:MP3 format3),Can play music by link to mobile phone,MP3,MP4,PC,IPOD ... to carry out. 3) portable: can connect to MP3, CD, walkman, notebook computer etc. Various audio equipment ... ear pain and even damage eardrum, damage hearing. MP3 speakers can let you release the headset, in ...