Applicable Fields： Perfect mate for iPOD, PMP, Notebook, Sony PSP, MP3/MP4 Player, CD Player etc. Unique Features: 1) Latest digital amplifier IC (Class AB) from Maxxbass Technology Waves USA used for the system. 2) OTG feature: With USB connector & MP3 decoder built-in, you can play music from U-Disk, flash memory, SD/CF Card, etc. when and where you want. Purely MP3 files plug & play! 3) MP3 playback: AN-11 supports AAC ADTS, ADIF bit stream (ISO 1381-7) & WMA. 4) Full functions remote controlled. 5) Digital decoder IC consumes much less power than traditional analog decoder IC. 6) Clear and distinct for mid-range and treble, deep for bass make AN-11 excellent to none in sound performance. 7) Stylish in apprearance, light in weight, foldable in structure, versatile in connectivity and easy or simple to use, this all-in-one portable stereo speaker system is a perfect mate for using in offices or at home with any portable players or devices like iPOD, PMP, Notebook, Sony PSP, MP3/MP4 Player, CD Player, Mobile Phone, PC, etc. 8) Rubberized surface in the middle of the main unit allow it good for putting other players or devices.