1.portable mini speaker 2.support TF usb card,MP3,MP4,WMA 3.portable,rechargeable 4.earphone function 5.logo position Portable Mini Speaker for PC/MP3/Phones 1 ... :>75dB 1.7Material:enviroment protective ABS2.Function 2.1.portable mini speaker,outdoor wireless speaker 2.2.Support TF usb driver,MP3,MP4,WMA ... ,pls feel free to tell us.Our tel: 0086-27495678 Portable Mini Speaker for PC/MP3/Phones