... Dropshipping Service 3,Fast Delivery 4,Paypal Acceped Big Sound Small Speaker Portable Altman Mini Subwoofer TF Speakers portable popular ... computer ,mobile phone , mp3 mp4, etcportable cool Mini speaker specification : Support MP3 audio formats.Compact and stylish mp3 ... -disk storage function.Built chargeable lithium battery Big Sound Small Speaker Portable Altman Mini Subwoofer TF Speakers