BOSS Audio Systems CH4620 Chaos Series 4 x 6 Inch Car Door Speakers - 200 Watts Max (per pair), Coaxial, 2 Way, Full Range, Bocinas Para Carro Dimensions: 4.7 x 3.4 x 2 inches, Impedance: 4 ohms, Mounting Depth: 1.5 inches, Mounting Hole: 3.1 inches Item Weight: 1.9 Lbs. (pair), Frequency Response: 100 Hz to 18 KHz Sensitivity: 88 dB @ 1 watt/1 meter, Poly Injection Cone Rubber Surround, Stamped Basket, 1 Inch Voice Coil, 1 inch Polyimide Tweeter BOSS Audio Systems provides a powerful 3-year platinum online dealer warranty so long as the purchase is made through Amazon.com. We strongly encourage professional installation of this product to ensure proper and safe functionality