... card slot 3. FM radio 4. With LED Display 5. 3.5mm earphone output Airplane Design Mini ... . battery-powered supply: 1.5W * 2 7. the system frequency response: 150 hz ~ 18 KHZ 8. power voltage ... card reader,holder and etc. Spare Parts Available: lcd/display, flex cable, trackball,trackpad,speaker,microphone, charging connecter ... the quality problems. Airplane Design Mini Portable Speaker with Micro SD/USB