DMYI Z12 Wireless Speaker Amplifier FM Radio USB Micro SD TF Portable Mini Speakers MP3 MP4 Computer Card Music Player(Red) Supports TF card, USB disk, FM,etc. (memory cards NOT included) Supports Line IN function, receiving the audio source from MP3, MP4, PC, Notebook, Pod, Phone, etc. HiFi & clear sounds and perfect tone. Built-in high capacity rechargeable battery, support long play. Compact and portable, convenient to carry