... time:2~3hoursMaterial:ABS Plastic, Wooden BoxFunction:Support SD card, USB, FM, can connect to ... iPod,iPone,GPS,PSP,mobile phone, notebook computer.2`Support FM Radio receive External battery holder, ... control wireless speaker.8`Can connect to computer for power supply Built-in digital power ... Weight:27KGGross Weight: 28KG Mini Speaker RX-I5 support iphone, nokia, blackbarry, MP3,MP4,laptop,PSP ...