Anncia Mini Digital Media Portable Music MP3 Player Micro SD/TF USB Disk Speaker FM Radio (201SE Blue) FM function, listen to your favorite radio programs Passive Bass Radiator, Enhance Bass effect. Build-in lithium battery 5C, rechargeable by USB port Supports Micro SD TF Card, A USB & MICRO SD card slot allows to save your favorite music on it and then just play music on the speaker (card not included) Earphone output enables you listen privately.