* Product Features"Boom-Boom Style" Deep bass response and Crystal clear highs with WOODEN Box Cabinet Dual Internal Amplifier !!!* SpeciticationsOUTPUT POWER MAX........ 300 Watts FREQUENCY RESPONSE....35Hz-250Hz/150Hz~20KHz DRIVE UNIT.........5.5 inch WOOFER 3 inch FR DRIVE IMPEDANCE..................4 Ohm S/N RATIO..........................GT100dB HUM&NOISE........................1mV/10mV DIMENSION(WxDxH)mm.......180x235x280(106x140x165) 1) HIGH PERFORMANCE WOODEN BOX DUAL INTERNAL AMPLIFIER 2) 3 PICES DESIGN FOR THE OPTIMUM SOUND RESPONSE 3) COMPATIBLE WITH ALL LEADING PERSONAL AND MICRO COMPUTER 4) MAGNETICALLY SHIELDED RUBBER ENCLOSURES* Technology & CertificationQ,UL,CUL,T,CE APPROVAL CERTIFIED 2 YEARS WARRANTY * Countries Exported ToWORLD WIDE * Sales InformationTEL)82-343-423-0525 FAX)82-343-424-5602* Additional Information< ACCESORIES > SUBWOOFER & SATELLITE SPEAKER 1SET AC/DC ADAPTOR 1EA AUDIO CABLE 1EA INSTURCTION MANUAL & WARRANTY CARD 1PC