... digital audio player, connect your MP3, MP4, CD, Ipod, Iphone, PSP, mobile phones, computers.•Metal, cicular design, button curved design, ... =10%Frequency response: 150-18000HZSignal And Noise Radio of Power amplifier>= 80dBLoud speaker: 1.77 inch (extemal diameter 45mm ... TF Card with LED Displayer Speaker 5 colors Portable Mini Rechargeable Speakers for iphone ipod ipad USB Micro SD TF Card PC ...