6-1/2 Coaxial Waterproof SpeakerKey Features:Max power handling: 120W/PairSensitivity: 91dBFrequency response: 75Hz - 20kHzNominal impedance: 4 OhmsPolypropylene woofer: 6-1/2Magnet: 9.8ozMounting hole diamater: 5Mounting depth: 2-1/3Tweeter type: DomeTweeter material: TitaniumOne-piece plastic chassis with integrated drip-edgeVoice coil size: 1Suspension/surround: RubberWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.