IPX7 Size 16.5cm Type 2-Way Coaxial System Maximum power 250 W Continuous power output 75 W Frequency response 34 Hz to 23 kHz Sensitivity 88 dB (1 W/1 m) dB Impedance 4 Ω Mounting Depth 60 mm Woofer Cut-Out Hole Φ127 mm Woofer material PP Surround Trex plane Voice Coil type Copper Voice Coil bobbin type Polyimide film Terminals FASTON Type Magnets Ferrite Tweeter Type Dome 2-way Coaxial Speaker Grill Weight 1.00 kg Dimensions Φ175 x 86 mm Speaker Grill White or Black included Illumination Optional UD-ME650LED. Sold Separately Other Reliability Waterproof IPX7, IPX6 UV ASTM D4329