300 watts each 4 X 3 inches Rich Texture chrome Works with any motorcycle amplifier Mirror & handle bar Brackets included fits all handlebars 7/8" 2 1/2 inches Working Voltage 10-16V DC VoiceCoil Impedance: 4 Resonc Frequency: 165HZ Effective Frequency Range: Fo-12kHZ Puiput Sound Pressure Level: 88dB Distortion: <= 5% -