ECOMGEAR(TM) Portable Mini Speaker Support Micro SD TF Card USB FM Radio Music Player Stereo PC MP3 MP4 Pink Aluminum diaphragm micro-speaker, insure the sound quality Supports Micro SD/TF card(TF/SD card NOT included), USB disk, FM Radio Support Micro SD and perfect for most electronic devices like MP3, MP4, Music Phones, iPod, Portable CD Players, Notebook PC etc Build-in lithium battery, rechargeable by USB port ECOMGEAR(TM) is a trademark. All ECOMGEAR? products are exclusively distributed by itself. ECOMGEAR? trademark is protected by US Trademark Law.