Shark Shkspeakerharley 100 Watt 3" Harley Motorcycle Marine Speakers with Handlebar Clamps Black Working Voltage 10-16V DC VoiceCoil Impedance: 4 Resonc Frequency: 165HZ Effective Frequency Range: Fo-12kHZ Puiput Sound Pressure Level: 88dB Rated Input Power: 15W Max Input Power: 100W watts ea Distortion: &lt;= 5% Handlebar clamps will adjust to fit all Bike Handlebars