BOSS Audio BE423 225 Watt (Per Pair), 4 Inch, Full Range, 3 Way Car Speakers (Sold in Pairs) Impedance: 4 Ohms, Frequency Response: 100 Hz - 18 kHz, Sensitivity: 90 dB Cone: Poly Injection, Voice Coil: 1 Inch Aluminum Surround: Rubber, Basket: Stamped 2 Piezo Tweeters Per Speaker Included: Grills Dimensions: Depth 4 x Width 4 x Height 2.3, Weight Per Pair:2.3 Lbs. 3 Year Platinum Online Dealer Warranty