... subwoofer 1.strong power,embedded amplifier,soft voice 2.support USB/SD,MP3,use usb flash disk 3.1 year warranty 8 ... fashion needs5)waterproof outcase design can provent your subwoofer from water & rain, prolong its life ... Multifunctional1.combine mp3 player with subwoofer.Easily play mp3 music by inserting usb or ... supply voltage: DC10-16 V. 3.Impedance: 8 ohms. 4.Power: 110 W. 5.Working ...