... 4, mobile phone, CD, PCs directly. Simple and fashion USB+SD SpeakerPortable mini speaker, MP3/4 play speaker , mobile ... speaker, CD play speaker,PCs play speaker , speaker box,usb speaker ,gift speaker, digital speaker,speaker bag.... Description:connect ... music playback, call bluetooth automatic switching, infrared remote control.USB flash drives,SD cards,MMCcards,and TF cards are all supported ...