Completely Water Proof Monitors3.5-Inch Poly Woofer 1-Inch High Compliance Mylar Tweeter Vented Design for High Power and Low Bass Heavy Duty ABS Construction w/Rubber Edge Aluminum ackets Quick Release Speaker Connection Built in Spring Loaded Mounting System 150 Watts Power RMS/300 Watts Peak 4 Ohm Speaker Impedance Frequency Response: 60-20kHz Dimensions: 4.75-Inch W x 7.25-Inch H x 4.75-Inch D