Bluetooth 100 Watt Speakers w/ Built in Amp Waterproof Marine w/ P Clamps for Motorcycle, Atv, Snowmobile Black Waterproof Mid-range 3" Loud Speakers With P Shape Handlebar Clamp 360 Degree All Direction Swivel Built-In 2x50W Watts Amplifier Built-in Bluetooth AUX-In 3.5mm Plug Port For iPod, iPhone, GPS & etc P shape handlebar clamp included, Easy Installation, Just Plug & PLay Working Voltage 10-16V DC VoiceCoil Impedance: 8 ohm 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%