1. with usb/sd/TF card 2.heavy bass 3.MOQ:50pcs Features:Compact ... up", "ON/OFF"Ports including: 3.5mm stereo port, Micro SD, USB(connect to computer or charge up).Support Micro ... SD and perfect for most electronic devices like MP3, MP4, mobile, ... 1 * Audio Speaker1 * Audio & USB cable mini speaker with usb/sd/TFcard/fm radio heavy bass