... 3.USB slot,earphone jack 4.SD/MMC card slot 5.Remote control Power Supply AC: 110/220V, 60/50HzDC: DC 9V, battery ... Compatible with CD/CD-R/CD-RW/MP3/WMA.3.Play/Pause, Stop,Skip, Repeat(one, all) ... jack.(optional)7. SD/MMC slot.(optional)8. 3.5mm earphone jack.9. Built-in 2 speakers ... AM/FM onlyOption 2: CD+MP3+ AM/FMOption 3:CD+MP3+USB+SD+ AM/FMRemote control is ... ,CD/MP3 player,SD/MMC memory card socket