1, 2.1 USB SOUNDDOCK DIGITAL MUSIC SYSTEM 2, RMS: 11W 3, IPHONE/ANDROID MOBIL DOCK 4, ... , 2.1 great selling multimedia speaker 2, With SD/MMC card jacks3, With USB 2.0 slot4, Support FM, automatically search ... : H175*W390*D190MM Surface finish: ABS Power input: DC 5VProduct picture Patent music speaker system with FM USB