1, Digital Stereo Speaker & FM Radio 2, USB disk, Micro SD/MMC card 3 ... jacks 3, With USB 2.0 slot 4, Support FM, automatically search and save radio station 5, Support clock, ... function infrared remote control10, With AUX input connection and stereo headphone jack 11, Built in 2200mAh Li-battery and ... : 3W * 2(L/R) +5W(SW)S/N: ≥90dB Stereo Isolution: 75dBDrive units: (2.5" 4ohm full range frequency) * 2 ...