1)Mini Sport Sound Box,Mini Speaker Box 2)can switch-in Notebook PC,MP3,MP4, ... radio 4)CE,FCC,RoHS etc Mini Sport Sound Box,Mini Speaker Box.Product presentation:1.Play music,with high-powered ... Ω SNR = 92 db @ 32Ωe).Play Duration:when use speaker about 10 to 20 hours,when use earphone about 70 ... 0 Full speedi).System Format:FTA16/FAT32j).Audio Format:MP3/WMA This product is a mini sport speaker,you can ...