... style Double the magnetic loudspeaker design For PC,MP3/MP4,IPOD,Mobile etc Direct factory Portable Mini stereo Speaker Support USB & SD ... input: SD/MMS card, U-LINE-IN3.5 mm disk.support, audio head.2.The power input: 2.0 standard DC ... interface.3.Audio format: support MP3/MP4,Music cell phones, laptops, ipods and digital products ...