... speaker for cell phone, computer, mp3, mp4 and other players. It also supports Udisk, SD/MMC card, card reader input. That ... or other multimedia players Three colors optional-red/black/blue SpecificationPrimary function: media player Input voltage: DC 5.0V/500MA Frequency range ... : black Product NoteJack: USB, DC in, Audio in, SD card slot Package Contents for Model: 1×Media player1×USB charge cable ...