... 3.FM radio(Optional) 4.SD/TF card support Music Speaker Micro SD TF FM Radio *Support FM radio;* Built- ... use USB power* Directly connection to personal computer, MP3, MP4, DVD, CD, Mobile phone,Computer*Support Micro SD TF card*Colors:Black ... 70dBLoud speaker:1.77inch(extermal diameter 45mm)magnetic resistant 4 OhmsLine in :configure Mini 5pin usbPower Supply:5V/1000m New design fashion music speaker