Feature:Flush/Surface/Angle Mounting.PEI and Titanium Diaphragm.Bass Engine Ready.Hybrid Pearl Mica Injection Woofer Cone.Light Weight Air Injected Rubber Surround.Neodymium Tweeter Magnet.Specification:Model: DDT-S30Peak power: 360 watts per pair / 180 watts eachRMS: 100 watts per pair / 50 watts eachFrequency response: 4000Hz-26000HzSensitivity: 90dbImpedance: 4OhmsSpeaker Size: 1(2.5cm)Net weight: 80g(0.2lb)/PairPackage Included:2 X Car Tweeter2 X Base2 X Crossover