Shark Shkhsp350 3" Waterproof Metallic (Real Chrome Metal) Motorcycle Speaker Set (2 Speakers) 1" Tweeter 400 Watts Metallic Housing With Polish Chrome Treament, Fit Excellent With Your Bike Waterproof Design, Handles All Weather Conditions Built-in Coaxial Hi-Fi Powerful Mid-range 3" Loud Speakers & 1" Tweeter 360 Degree All Direction Swivel Heavy Duty Handlebar Clamp Included, Easy Installation Working Voltage 10-16V DC VoiceCoil Impedance: 4 ohm Resonc Frequency: 165HZ Frequency response: 150Hz-20kHz S/N: 88dB Rated Input Power: 50W Max Input Power: 400W watts ea Distortion: &lt;= 5%